Denote

Denote is a MIDI file demake tool for PICO-8.  It converts MIDI files into SFX data that can be pasted into PICO-8.

Instructions:

1. Drag and drop a MIDI file onto the folder icon or click the folder icon to open the file dialog. 
2. Wait for the embedded PICO-8 console to boot up and download the data.
3. Adjust settings as desired.  
   1. Set the note granularity at the top of each section.  The optimum value depends on the music.  It should  be at least as long as the duration of the shortest note in the piece.  Caveats: If it is set too low, short notes will become distorted.  If set too high, you may not have enough SFX slots to accommodate the piece.  
   2. Select the sections and tracks to include by checking the boxes.  PICO-8 accommodates up to four tracks for each section. 
   3. Click Remove Leading Silence if you want the section to start with the first note that has a volume and skip over any introductory silence
   4. Slide the blue dots above the preview if you want to extract an excerpt from the section
4. When you see "TXF COMPLETE" in the console, press play to hear the composition.
5. Press copy to copy the SFX data and music patterns to the clipboard. Be sure to credit @wasiknighit if you use their custom instrument SFX data in any published work.
6. Paste the SFX data  and music patterns into PICO-8
   1. Open your cartridge in PICO-8.  
   2. Go to an empty music pattern and press Ctrl-V.  SFX data and music patterns will be pasted in.
   3. MIDI files are often much longer and contain more simultaneous tracks than PICO-8 can accommodate.  Denote will truncate the file to fit PICO-8 's limitations.

Need to convert a MIDI file to Picotron?  Try Miditron.