http://famitracker.shoodot.net/ - FamiTracker - 8bit music creator. The best you can get. Offers NSF file exporting, allowing you to create music and put it onto an actual NES cartridge if you're that smart.
Click MusicalKEYS - "Click MusicalKEYS is an onscreen musical keyboard program to play piano music through the computer with 128 musical instruments."
chrome 85%scripting 15%
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