please note: this is my first norns/lua project, so the code is no doubt messy. i'm still learning!
outputs on midi channels 1 to 4, as well as basic internal voice (PolyPerc).
controls are shown on-screen, but here they are for clarity:
key1: pattern/file view
enc1: tempo
key2: add/cut/paste note
key3: cycle channel
enc2: edit position
key2+enc2: select note
key3+enc1: channel length
key3+enc2: transpose channel
key3+enc3: shift(rotate) notes on channel
key2: save selected channel pattern
key3: load selected channel pattern
enc2: select pattern
enc3: select channel
thanks to oliver wittchow for making inspiring sequencing interfaces.