prostheticknowledge:

EightBitBeats - a social 8 Bit music sequencer

Created as part of the 48-hour Node Knockout programming competition, where teams of programmers were to create a web-based app in a weekend using node.js

The idea is interesting, yet not polished - with a little more work this could be a fun collaborative site, but the basics are there. You have a sequencer board, with six types of instruments. A Mega-Man sprite runs from left to right as the timer. Other participants can join in, setting up their own sequences, composing together. You can chat and interact. You can’t, though, save your compositions, and each online user can only operate one type of instrument at a time, and if you change your instrument, you lose whatever you have been working on.

The video above best demonstrates the idea, using the Streetfighter II track ‘Ken’s Theme’ as an example.

For more info about the development from a coder perspective, this post gives all the details you need.

Otherwise: http://eightbitbeats.com/