I've had the chords in mind for a long time, but never really found a way to really extend on this till just now. Also figured "hey i got jummbox bookmarked in firefox i might as well try this out", and if you're familiar with BeepBox, JummBox is like a bit of a step up from BeepBox, featuring a few new additions and you got different themes to choose from too! Although, if you want to use samples with it, you miiiiiiight wanna look at Pandora's BeepBox, that's the one with sample support.
There's quite a few flavors of BeepBox, actually. This one, Pandora's BeepBox, ModBox, some others out there too that I don't know of. I'm just familiar with these three.
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