7CM Story Tonality Editor Free

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Everyone
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About this app

── Compose music without knowing music theory ──

7CM STE is a new music composition and arrangement tool that lets you design music by drawing lines, grouping notes, choosing palettes, and tracing with your finger.

▼ “What is a chord?” “Which notes should I choose?”
You don't need to learn all of that before you start.

▼ Trace to design emotion
Draw the flow of emotion with a line and design your chord progression intuitively.

▼ Bundle notes your way
You don't need to know chord names. Simply choose how to group notes and freely design your chords and playing styles.

▼ Color your music with a palette
Choose from the 7CM Palette to freely shape the mood and tonality of your music.

▼ Let the attraction of sound guide your melody
Move your finger along the “attraction” between notes and let it guide you as you create your melody.

▼ Forget about the black keys
Build melodies around scale degrees without having to think about the black and white keys of a piano.

── Emotion (Structure) × Atmosphere (Glow) + Melody = Original Work ──

Instead of studying music theory before you create,
music emerges as you interact with your musical intuition.

7CM STE
Story & Tonality Editor

No Theory Required. Trace Your Creativity into Music.
Compose Music by Tracing Your Ideas
Updated on
Sep 21, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

v1.0.10
・引力ボックスの描画修正
・Instの表記変更
・Demoのオンライン化
・ブロックコピーの一部修正
・演奏スタイルの分解能追加
・不要ボタンの削除
・音量微調整用画面追加
・Bundle、DangDongスタイルの拡張
・特定画面のスクロールずれ修正
・Inst3以降がない場合の処理追加
・Bundleの全音符モード追加