Pick a pattern for any bar and its notes go into that melody, made from the song's key and scale. Change them on the grid afterwards if you like. Picking Empty clears the bar. The play button here works like the other boxes' buttons: while the whole song plays it stops or starts just the melodies, and with nothing playing it plays the melodies by themselves. Switch either melody off to hear the other one by itself.
Press record and your song plays from the start while everything you hear is recorded, up to one minute. Tap in notes as it goes, or change sounds, and that's recorded too.
Save your song as a MIDI file to open in other music apps, or open a MIDI file here to play with it. Files stay on your device: nothing is uploaded, and an opened file isn't saved.
Pick any song from Songs: the tune goes on Melody 1 and the bass line on Melody 2, in the song's own key and speed. It opens just for now, so your own song is safe (Back to my song returns to it, Keep it as my song keeps it). The play button, Volume and Effect here are for the tune: Melody 1 and Melody 2.
Add any beat from Drums under your song. It repeats all the way through, along with any drum squares you tap in yourself.
Pick a different sound for any drum, turn any drum up or down, and give each drum its own effect. A drum's effect goes on top of the Effect for all the drums above.
Bring in a sound file (WAV, MP3 or M4A) and it plays with your song: a recording of your voice, a guitar, or a sample. It starts at the bar you pick and starts again each time the song goes round.
No file yet.
Pick a chord progression, or a chord for each bar, and the band plays it under your tune. The Bass box below plays along with these chords. Changing the key here changes it at the top too, so your tune moves with the band.
The bass plays the bottom note of each bar's chord from Your band, so pick the chords there. Bars with no chord are quiet.
An arpeggio plays each bar's chord one note at a time, like in Arpeggios. Bars with no chord use the key's home chord. Play it on top of the band like a melody, or by itself. The key is the same as the Key at the top.
A Moog-style synthesizer you build yourself. Pick what it plays along with, then move the knobs while the song plays: the filter and vibrato change even on notes that are already sounding. Tap the keys to play it yourself.
Tap the drums to play them, or press keys 1 to 9 for the numbered drums.
Tap a drum's letters (like HH) to turn it off or on, even while the beat plays. Press and hold a square for a soft ghost note.
How loud each drum is, and an effect for each one (tremolo, vibrato, echo, delay, distortion or reverb). Change them while the beat plays and you hear it on the next hit. A drum's effect goes on top of the Effect for the whole kit.
Press record and your beat plays from the start while everything you hear is recorded, up to one minute. Tap the drums, change sounds or turn drums off as it goes, and that's recorded too.
Tap a chord to hear it.
A key has seven notes, and you can build a chord on each one. Musicians number them with Roman numerals: I is the chord on the first note, IV on the fourth, V on the fifth. Big letters (I, IV, V) are major chords and small letters (ii, iii, vi) are minor. A small circle (vii°) means diminished.
Because the numbers count from the key's first note, a progression like I – V – vi – IV works in every key. Change the key above and the same pads play the same song, just higher or lower.
A chord is three or more notes played together. Count up from the bottom note in half steps (one key to the very next key, black or white) and you get a recipe.
Mix your own wave out of sine waves. Each slider is one harmonic: a sine wave that wiggles 1, 2, 3 … 8 times as fast.
Sound is air wiggling back and forth. The wave picture shows one wiggle. How fast it repeats is the pitch: more wiggles each second sounds higher. The shape of the wiggle is the sound’s color, which musicians call timbre (say "tam-ber").
Every shape can be built by adding sine waves together: one at the note’s speed, plus others 2, 3, 4 … times as fast, called harmonics. The bar chart shows how much of each harmonic is in the wave. A flute and a trumpet can play the very same note and still sound different, because their recipes are different.
Root
Scale
Note
Tip: turn your phone sideways for bigger keys. No sound? Check the silent switch and volume.