How to Play:

  • Click (and drag) the grid to place notes!
  • Quickly click a note again to delete it!
  • Press Space to play / pause!
  • Use asdfghjkl;wetyuop keys to practice!
  • Use 1, 2, 3, etc. to quickly swap between instruments!
  • Ctrl+Z and Ctrl+Y kind of work too!

Expert Tips:

  • Use shift to quickly swap between note pencil and select mode!
  • Hold shift + drag the cursor to select notes!
  • Press shift + 1, 2, 3, etc. to select all notes for a given instrument!
  • Use escape to clear note selection!
I made a little midi sequencer for your browser! 
Inspired by Mario Paint Composer and other similar tools, 
I wanted something that could import soundfont files and make silly little tunes.
There's still some stuff I want to fix 
but feel free to use it to your hearts content!

TODO (ignore if ur not jakeonaut):
  • [ ] handle save/load with different .sf2s then the default !
  • [ ] undo is saved weird when clicking and dragging notes (saves a weird in-between state)
  • [ ] this is similar but even worse with moving with arrow keys,
  • [ ] undo / redo when deleting an instrument ? (or creating an instrument?)
  • will have to have a max undo history though probably..
  • [ ] moving notes with arrow keys should only save an undo state after the user changes (or removes) selection
  • [ ] - :think: patterns????
  • EXPORT TO MP3!!!!!: https://github.com/zhuker/lamejs
  • [ ] make it play nicer in mobile
  • [ ] Longer tracks
  • [ ] QOL - should we delete notes that were dragged off the left of the playhead? (when selected with an offset)
  • [ ] QOL - could remove notes from the selection that are reselected with shift (like a toggle... like Finder)
  • clicking and dragging multiple triplet notes doesn't properly set their relative note offsets to each other
  • same with clicking and dragging quarter notes when triplets are ALSO selected
  • [ ] is there a way to change tempo dynamically in midi?
  • [ ] Record samples as instruments: https://developer.mozilla.org/en-US/docs/Web/API/MediaStream_Recording_API
More information
Published 7 hours ago
StatusReleased
CategoryTool
PlatformsHTML5
Rating
Rated 5.0 out of 5 stars
(2 total ratings)
Authorpetsclub2
Tagsbrowser, composer, daw, mario-paint, Music, Music Production, tool
ContentNo generative AI was used

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songJsons.zip 9.6 kB

Development log

Comments

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Polish guy10 minutes ago

I really like it, easy to use at least for me

Reply
🕹️swagshaw1 hour ago

Always a good day when you make something, this is neat

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