Loving this browser emulation of Roland’s classic 808 and 303 machines. It’s so much fun to play with, and a great resource for learning old school sequencing and drum programming.
It’s a lot like Ableton’s Learning Synths and Learning Music sites, which are also great resources for learning. Combining all 3 would get you started from nothing and quickly progress. People spend too much time just watching YouTube videos, and not enough actually doing the things they want to learn!
Anyway, this 808/303 browser thing seems like a lot of effort went into it – Roland even got acid house legend A Guy Called Gerald to do a promo/tutorial: