Tonemash

Write better chord progressions — and understand why they work. Tonemash is a harmony studio for songwriters, producers, and players. Build a progression, hear it over a real groove, and let Tonemash show you smarter chord choices, richer voicings, and exactly how to play them on guitar, piano, or bass. BUILD PROGRESSIONS FAST • Pick any major or minor key and a style: Neo-Soul, Jazz, Classical, or Rock • Smart suggestions offer the next chord that fits where your progression is going • A full chord palette for every scale degree — 7ths, 9ths, 11ths, 13ths, secondary dominants, and borrowed chords • Drag chords into your progression, swap any chord for an alternative, or roll the dice for a fresh idea REHARMONIZE IN ONE TAP Turn a simple progression into something sophisticated: Seventh Chords, Neo-Soul, ii-V-I, Secondary Dominants, Altered Dominants, Tritone Substitutions, and…