diff --git a/model/lyrics_benchmark_test.go b/model/lyrics_benchmark_test.go
index 624d599c2..0de2549e7 100644
--- a/model/lyrics_benchmark_test.go
+++ b/model/lyrics_benchmark_test.go
@@ -1,59 +1,26 @@
 package model
 
 import (
-	"fmt"
-	"strings"
+	"os"
+	"path/filepath"
 	"testing"
 )
 
-// repeatLines builds a payload of n lines using the given per-line template,
-// where %d is the line index, so benchmark inputs are realistically sized.
-func repeatLines(n int, format string) string {
-	var sb strings.Builder
-	for i := 0; i < n; i++ {
-		fmt.Fprintf(&sb, format, i)
+// Benchmark payloads are real public-domain lyrics ("Auld Lang Syne", Robert
+// Burns, 1788) rendered into every supported format, so the numbers reflect
+// realistic content and sizing. The same song across formats makes per-format
+// cost directly comparable. Fixtures live in tests/fixtures/lyrics/.
+func loadLyricFixture(b *testing.B, name string) []byte {
+	b.Helper()
+	contents, err := os.ReadFile(filepath.Join("..", "tests", "fixtures", "lyrics", name))
+	if err != nil {
+		b.Fatal(err)
 	}
-	return sb.String()
+	return contents
 }
 
-const benchLineCount = 200
-
-func benchLRC() []byte {
-	return []byte(repeatLines(benchLineCount, "[00:%02d.00]lyric line number with some words\n"))
-}
-
-func benchPlain() []byte {
-	return []byte(repeatLines(benchLineCount, "lyric line number %d with some words\n"))
-}
-
-func benchEnhancedLRC() []byte {
-	return []byte(repeatLines(benchLineCount, "[00:%02d.00]<00:00.10>word <00:00.50>by <00:00.90>word\n"))
-}
-
-func benchSRT() []byte {
-	return []byte(repeatLines(benchLineCount, "%d\n00:00:01,000 --> 00:00:02,000\nsubtitle line\n\n"))
-}
-
-func benchTTML() []byte {
-	var sb strings.Builder
-	sb.WriteString(`<tt xmlns="http://www.w3.org/ns/ttml"><body><div>`)
-	for i := 0; i < benchLineCount; i++ {
-		fmt.Fprintf(&sb, `<p begin="00:00:%02d.000" end="00:00:%02d.000">ttml line</p>`, i%60, (i+1)%60)
-	}
-	sb.WriteString(`</div></body></tt>`)
-	return []byte(sb.String())
-}
-
-func benchYAML() []byte {
-	var sb strings.Builder
-	sb.WriteString("version: \"1.0\"\nmetadata:\n  language: eng\nlines:\n")
-	for i := 0; i < benchLineCount; i++ {
-		fmt.Fprintf(&sb, "  - text: yaml line %d\n    start_ms: %d\n", i, i*1000)
-	}
-	return []byte(sb.String())
-}
-
-func benchmarkParse(b *testing.B, suffix string, contents []byte) {
+func benchmarkParse(b *testing.B, suffix, fixture string) {
+	contents := loadLyricFixture(b, fixture)
 	b.ReportAllocs()
 	b.SetBytes(int64(len(contents)))
 	for b.Loop() {
@@ -63,16 +30,16 @@ func benchmarkParse(b *testing.B, suffix string, contents []byte) {
 	}
 }
 
-func BenchmarkParseLyrics_LRC(b *testing.B)         { benchmarkParse(b, ".lrc", benchLRC()) }
-func BenchmarkParseLyrics_Plain(b *testing.B)       { benchmarkParse(b, ".txt", benchPlain()) }
-func BenchmarkParseLyrics_EnhancedLRC(b *testing.B) { benchmarkParse(b, ".lrc", benchEnhancedLRC()) }
-func BenchmarkParseLyrics_SRT(b *testing.B)         { benchmarkParse(b, ".srt", benchSRT()) }
-func BenchmarkParseLyrics_TTML(b *testing.B)        { benchmarkParse(b, ".ttml", benchTTML()) }
-func BenchmarkParseLyrics_YAML(b *testing.B)        { benchmarkParse(b, ".yaml", benchYAML()) }
+func BenchmarkParseLyrics_LRC(b *testing.B)         { benchmarkParse(b, ".lrc", "auld-lang-syne.lrc") }
+func BenchmarkParseLyrics_Plain(b *testing.B)       { benchmarkParse(b, ".txt", "auld-lang-syne.txt") }
+func BenchmarkParseLyrics_EnhancedLRC(b *testing.B) { benchmarkParse(b, ".lrc", "auld-lang-syne.elrc") }
+func BenchmarkParseLyrics_SRT(b *testing.B)         { benchmarkParse(b, ".srt", "auld-lang-syne.srt") }
+func BenchmarkParseLyrics_TTML(b *testing.B)        { benchmarkParse(b, ".ttml", "auld-lang-syne.ttml") }
+func BenchmarkParseLyrics_YAML(b *testing.B)        { benchmarkParse(b, ".yaml", "auld-lang-syne.yaml") }
 
 // Content-sniff path (empty suffix) — what embedded tags and plugins hit.
-func BenchmarkParseLyrics_SniffTTML(b *testing.B)  { benchmarkParse(b, "", benchTTML()) }
-func BenchmarkParseLyrics_SniffSRT(b *testing.B)   { benchmarkParse(b, "", benchSRT()) }
-func BenchmarkParseLyrics_SniffYAML(b *testing.B)  { benchmarkParse(b, "", benchYAML()) }
-func BenchmarkParseLyrics_SniffLRC(b *testing.B)   { benchmarkParse(b, "", benchLRC()) }
-func BenchmarkParseLyrics_SniffPlain(b *testing.B) { benchmarkParse(b, "", benchPlain()) }
+func BenchmarkParseLyrics_SniffTTML(b *testing.B)  { benchmarkParse(b, "", "auld-lang-syne.ttml") }
+func BenchmarkParseLyrics_SniffSRT(b *testing.B)   { benchmarkParse(b, "", "auld-lang-syne.srt") }
+func BenchmarkParseLyrics_SniffYAML(b *testing.B)  { benchmarkParse(b, "", "auld-lang-syne.yaml") }
+func BenchmarkParseLyrics_SniffLRC(b *testing.B)   { benchmarkParse(b, "", "auld-lang-syne.lrc") }
+func BenchmarkParseLyrics_SniffPlain(b *testing.B) { benchmarkParse(b, "", "auld-lang-syne.txt") }
diff --git a/tests/fixtures/lyrics/auld-lang-syne.elrc b/tests/fixtures/lyrics/auld-lang-syne.elrc
new file mode 100644
index 000000000..c1e7be1dc
--- /dev/null
+++ b/tests/fixtures/lyrics/auld-lang-syne.elrc
@@ -0,0 +1,11 @@
+[ar:Robert Burns]
+[ti:Auld Lang Syne]
+[lang:eng]
+[00:00.00]<00:00.00>Should <00:00.90>auld <00:01.80>acquaintance <00:02.70>be <00:03.60>forgot,
+[00:04.50]<00:04.50>And <00:05.40>never <00:06.30>brought <00:07.20>to <00:08.10>mind?
+[00:09.00]<00:09.00>Should <00:09.90>auld <00:10.80>acquaintance <00:11.70>be <00:12.60>forgot,
+[00:13.50]<00:13.50>And <00:14.40>auld <00:15.30>lang <00:16.20>syne?
+[00:18.00]<00:18.00>For <00:18.90>auld <00:19.80>lang <00:20.70>syne, <00:21.60>my <00:22.05>dear,
+[00:22.50]<00:22.50>For <00:23.40>auld <00:24.30>lang <00:25.20>syne,
+[00:27.00]<00:27.00>We'll <00:27.90>tak <00:28.80>a <00:29.25>cup <00:30.15>o' <00:30.60>kindness <00:31.05>yet,
+[00:31.50]<00:31.50>For <00:32.40>auld <00:33.30>lang <00:34.20>syne.
diff --git a/tests/fixtures/lyrics/auld-lang-syne.lrc b/tests/fixtures/lyrics/auld-lang-syne.lrc
new file mode 100644
index 000000000..56021870a
--- /dev/null
+++ b/tests/fixtures/lyrics/auld-lang-syne.lrc
@@ -0,0 +1,28 @@
+[ar:Robert Burns]
+[ti:Auld Lang Syne]
+[al:Traditional]
+[lang:eng]
+[00:00.00]Should auld acquaintance be forgot,
+[00:04.50]And never brought to mind?
+[00:09.00]Should auld acquaintance be forgot,
+[00:13.50]And auld lang syne?
+[00:18.00]For auld lang syne, my dear,
+[00:22.50]For auld lang syne,
+[00:27.00]We'll tak a cup o' kindness yet,
+[00:31.50]For auld lang syne.
+[00:36.00]And surely ye'll be your pint-stowp,
+[00:40.50]And surely I'll be mine,
+[00:45.00]And we'll tak a cup o' kindness yet,
+[00:49.50]For auld lang syne.
+[00:54.00]We twa hae run about the braes,
+[00:58.50]And pou'd the gowans fine,
+[01:03.00]But we've wander'd mony a weary fit,
+[01:07.50]Sin auld lang syne.
+[01:12.00]We twa hae paidl'd in the burn,
+[01:16.50]Frae morning sun till dine,
+[01:21.00]But seas between us braid hae roar'd
+[01:25.50]Sin auld lang syne.
+[01:30.00]And there's a hand, my trusty fiere,
+[01:34.50]And gie's a hand o' thine,
+[01:39.00]And we'll tak a right gude-willie waught,
+[01:43.50]For auld lang syne.
diff --git a/tests/fixtures/lyrics/auld-lang-syne.srt b/tests/fixtures/lyrics/auld-lang-syne.srt
new file mode 100644
index 000000000..116bec0bf
--- /dev/null
+++ b/tests/fixtures/lyrics/auld-lang-syne.srt
@@ -0,0 +1,95 @@
+1
+00:00:00,000 --> 00:00:04,500
+Should auld acquaintance be forgot,
+
+2
+00:00:04,500 --> 00:00:09,000
+And never brought to mind?
+
+3
+00:00:09,000 --> 00:00:13,500
+Should auld acquaintance be forgot,
+
+4
+00:00:13,500 --> 00:00:18,000
+And auld lang syne?
+
+5
+00:00:18,000 --> 00:00:22,500
+For auld lang syne, my dear,
+
+6
+00:00:22,500 --> 00:00:27,000
+For auld lang syne,
+
+7
+00:00:27,000 --> 00:00:31,500
+We'll tak a cup o' kindness yet,
+
+8
+00:00:31,500 --> 00:00:36,000
+For auld lang syne.
+
+9
+00:00:36,000 --> 00:00:40,500
+And surely ye'll be your pint-stowp,
+
+10
+00:00:40,500 --> 00:00:45,000
+And surely I'll be mine,
+
+11
+00:00:45,000 --> 00:00:49,500
+And we'll tak a cup o' kindness yet,
+
+12
+00:00:49,500 --> 00:00:54,000
+For auld lang syne.
+
+13
+00:00:54,000 --> 00:00:58,500
+We twa hae run about the braes,
+
+14
+00:00:58,500 --> 00:01:03,000
+And pou'd the gowans fine,
+
+15
+00:01:03,000 --> 00:01:07,500
+But we've wander'd mony a weary fit,
+
+16
+00:01:07,500 --> 00:01:12,000
+Sin auld lang syne.
+
+17
+00:01:12,000 --> 00:01:16,500
+We twa hae paidl'd in the burn,
+
+18
+00:01:16,500 --> 00:01:21,000
+Frae morning sun till dine,
+
+19
+00:01:21,000 --> 00:01:25,500
+But seas between us braid hae roar'd
+
+20
+00:01:25,500 --> 00:01:30,000
+Sin auld lang syne.
+
+21
+00:01:30,000 --> 00:01:34,500
+And there's a hand, my trusty fiere,
+
+22
+00:01:34,500 --> 00:01:39,000
+And gie's a hand o' thine,
+
+23
+00:01:39,000 --> 00:01:43,500
+And we'll tak a right gude-willie waught,
+
+24
+00:01:43,500 --> 00:01:48,000
+For auld lang syne.
diff --git a/tests/fixtures/lyrics/auld-lang-syne.ttml b/tests/fixtures/lyrics/auld-lang-syne.ttml
new file mode 100644
index 000000000..6ad322a30
--- /dev/null
+++ b/tests/fixtures/lyrics/auld-lang-syne.ttml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<tt xmlns="http://www.w3.org/ns/ttml" xml:lang="eng">
+  <body>
+    <div>
+      <p begin="00:00:00.000" end="00:00:04.500">Should auld acquaintance be forgot,</p>
+      <p begin="00:00:04.500" end="00:00:09.000">And never brought to mind?</p>
+      <p begin="00:00:09.000" end="00:00:13.500">Should auld acquaintance be forgot,</p>
+      <p begin="00:00:13.500" end="00:00:18.000">And auld lang syne?</p>
+      <p begin="00:00:18.000" end="00:00:22.500">For auld lang syne, my dear,</p>
+      <p begin="00:00:22.500" end="00:00:27.000">For auld lang syne,</p>
+      <p begin="00:00:27.000" end="00:00:31.500">We'll tak a cup o' kindness yet,</p>
+      <p begin="00:00:31.500" end="00:00:36.000">For auld lang syne.</p>
+      <p begin="00:00:36.000" end="00:00:40.500">And surely ye'll be your pint-stowp,</p>
+      <p begin="00:00:40.500" end="00:00:45.000">And surely I'll be mine,</p>
+      <p begin="00:00:45.000" end="00:00:49.500">And we'll tak a cup o' kindness yet,</p>
+      <p begin="00:00:49.500" end="00:00:54.000">For auld lang syne.</p>
+      <p begin="00:00:54.000" end="00:00:58.500">We twa hae run about the braes,</p>
+      <p begin="00:00:58.500" end="00:01:03.000">And pou'd the gowans fine,</p>
+      <p begin="00:01:03.000" end="00:01:07.500">But we've wander'd mony a weary fit,</p>
+      <p begin="00:01:07.500" end="00:01:12.000">Sin auld lang syne.</p>
+      <p begin="00:01:12.000" end="00:01:16.500">We twa hae paidl'd in the burn,</p>
+      <p begin="00:01:16.500" end="00:01:21.000">Frae morning sun till dine,</p>
+      <p begin="00:01:21.000" end="00:01:25.500">But seas between us braid hae roar'd</p>
+      <p begin="00:01:25.500" end="00:01:30.000">Sin auld lang syne.</p>
+      <p begin="00:01:30.000" end="00:01:34.500">And there's a hand, my trusty fiere,</p>
+      <p begin="00:01:34.500" end="00:01:39.000">And gie's a hand o' thine,</p>
+      <p begin="00:01:39.000" end="00:01:43.500">And we'll tak a right gude-willie waught,</p>
+      <p begin="00:01:43.500" end="00:01:48.000">For auld lang syne.</p>
+    </div>
+  </body>
+</tt>
diff --git a/tests/fixtures/lyrics/auld-lang-syne.txt b/tests/fixtures/lyrics/auld-lang-syne.txt
new file mode 100644
index 000000000..42ab8330e
--- /dev/null
+++ b/tests/fixtures/lyrics/auld-lang-syne.txt
@@ -0,0 +1,24 @@
+Should auld acquaintance be forgot,
+And never brought to mind?
+Should auld acquaintance be forgot,
+And auld lang syne?
+For auld lang syne, my dear,
+For auld lang syne,
+We'll tak a cup o' kindness yet,
+For auld lang syne.
+And surely ye'll be your pint-stowp,
+And surely I'll be mine,
+And we'll tak a cup o' kindness yet,
+For auld lang syne.
+We twa hae run about the braes,
+And pou'd the gowans fine,
+But we've wander'd mony a weary fit,
+Sin auld lang syne.
+We twa hae paidl'd in the burn,
+Frae morning sun till dine,
+But seas between us braid hae roar'd
+Sin auld lang syne.
+And there's a hand, my trusty fiere,
+And gie's a hand o' thine,
+And we'll tak a right gude-willie waught,
+For auld lang syne.
diff --git a/tests/fixtures/lyrics/auld-lang-syne.yaml b/tests/fixtures/lyrics/auld-lang-syne.yaml
new file mode 100644
index 000000000..ca2a3d32e
--- /dev/null
+++ b/tests/fixtures/lyrics/auld-lang-syne.yaml
@@ -0,0 +1,95 @@
+version: '1.0'
+metadata:
+  title: 'Auld Lang Syne'
+  artist: 'Robert Burns'
+  album: 'Traditional'
+  language: 'eng'
+lines:
+  - text: "Should auld acquaintance be forgot,"
+    start_ms: 0
+    end_ms: 4500
+    words:
+      - text: "Should "
+        start_ms: 0
+        end_ms: 900
+      - text: "auld "
+        start_ms: 900
+        end_ms: 1800
+      - text: "acquaintance "
+        start_ms: 1800
+        end_ms: 2700
+      - text: "be "
+        start_ms: 2700
+        end_ms: 3600
+      - text: "forgot,"
+        start_ms: 3600
+        end_ms: 4500
+  - text: "And never brought to mind?"
+    start_ms: 4500
+    end_ms: 9000
+  - text: "Should auld acquaintance be forgot,"
+    start_ms: 9000
+    end_ms: 13500
+  - text: "And auld lang syne?"
+    start_ms: 13500
+    end_ms: 18000
+  - text: "For auld lang syne, my dear,"
+    start_ms: 18000
+    end_ms: 22500
+  - text: "For auld lang syne,"
+    start_ms: 22500
+    end_ms: 27000
+  - text: "We'll tak a cup o' kindness yet,"
+    start_ms: 27000
+    end_ms: 31500
+  - text: "For auld lang syne."
+    start_ms: 31500
+    end_ms: 36000
+  - text: "And surely ye'll be your pint-stowp,"
+    start_ms: 36000
+    end_ms: 40500
+  - text: "And surely I'll be mine,"
+    start_ms: 40500
+    end_ms: 45000
+  - text: "And we'll tak a cup o' kindness yet,"
+    start_ms: 45000
+    end_ms: 49500
+  - text: "For auld lang syne."
+    start_ms: 49500
+    end_ms: 54000
+  - text: "We twa hae run about the braes,"
+    start_ms: 54000
+    end_ms: 58500
+  - text: "And pou'd the gowans fine,"
+    start_ms: 58500
+    end_ms: 63000
+  - text: "But we've wander'd mony a weary fit,"
+    start_ms: 63000
+    end_ms: 67500
+  - text: "Sin auld lang syne."
+    start_ms: 67500
+    end_ms: 72000
+  - text: "We twa hae paidl'd in the burn,"
+    start_ms: 72000
+    end_ms: 76500
+  - text: "Frae morning sun till dine,"
+    start_ms: 76500
+    end_ms: 81000
+  - text: "But seas between us braid hae roar'd"
+    start_ms: 81000
+    end_ms: 85500
+  - text: "Sin auld lang syne."
+    start_ms: 85500
+    end_ms: 90000
+  - text: "And there's a hand, my trusty fiere,"
+    start_ms: 90000
+    end_ms: 94500
+  - text: "And gie's a hand o' thine,"
+    start_ms: 94500
+    end_ms: 99000
+  - text: "And we'll tak a right gude-willie waught,"
+    start_ms: 99000
+    end_ms: 103500
+  - text: "For auld lang syne."
+    start_ms: 103500
+    end_ms: 108000