Depth, not summaries

Get genuinely good
at something.

Say what you want to get good at. You get a track of in-depth lessons, in order, and you work through it until you can actually do the thing.

Work up from intervals to chords to voice leading, so you can read a lead sheet, hear why a progression works, and write one yourself.

Progress(23%)

31 min/ 2h 14m+31 min today

Pitch and Intervals
Done
Name every interval by ear and on the stave, and hear why some sit still and some pull.
5/5
2
Chords That Do Work
Up next
Build triads and sevenths, then use them to make a progression go somewhere.
2/5
1. Intervals and Why They Sound That Way6 min
2. Building Triads5 min
3. Seventh Chords in PracticeStart5 min
4. Inversions and Voice Leading5 min
5. Reading a Lead Sheet5 min
3
Keys and Modulation
Read a key signature at a glance, then move between keys without the seams showing.
0/5
4
Writing Your Own
Put the whole thing to work: harmonise a melody and voice it for real instruments.
0/5

Work up from intervals to chords to voice leading, so you can read a lead sheet, hear why a progression works, and write one yourself.

Progress(23%)

31 min/ 2h 14m+31 min today

Pitch and Intervals
Done
Name every interval by ear and on the stave, and hear why some sit still and some pull.
5/5
2
Chords That Do Work
Up next
Build triads and sevenths, then use them to make a progression go somewhere.
2/5
1. Intervals and Why They Sound That Way6 min
2. Building Triads5 min
3. Seventh Chords in PracticeStart5 min
4. Inversions and Voice Leading5 min
5. Reading a Lead Sheet5 min
3
Keys and Modulation
Read a key signature at a glance, then move between keys without the seams showing.
0/5
4
Writing Your Own
Put the whole thing to work: harmonise a melody and voice it for real instruments.
0/5

From curious to capable.

Say what you want to get good at. Get a track built for it. Finish it.

01
Say what you want to get good at.
“Spanish for travel.” “Personal finance.” “Music theory.” One line is enough. Paste a syllabus if you have one.
02
Get a track built for it.
Modules and lessons in order, as deep as the subject needs. Ready in about a minute.
03
Finish it.
Progress tracks itself. The track always knows what comes next.

Why Acuma

Every lesson is 750 to 1100 words of substance: worked examples, reasoning, edge cases. Not a listicle.

Concepts build on concepts. Lessons run in order, so you never open the app wondering what to read next.

Progress saves itself. Come back in a week and the track picks up exactly where you stopped.

No warm-up filler. The material assumes you want to actually be good at this, and goes as deep as the subject needs.

The internet gave you infinite tabs.
Acuma gives you a path.

Start a track in 30 seconds. Work at your own pace. Finish what you start.