Bored? Done your work? Try these sites for Online Music tools:
Drumbot - Drum machines, chord progression generator and much more.
Until AM - online DJ tool
UJAM - Songwriting
Audiotool - Sequencing
Soundbrush - free iPad app
Incredibox - cloudbased looping tool
Soundation-web based looping and MIDI Digital Audio Workstation
Audio Sauna - web based DAW (Didital Audio Workstation) with built in virtual instruments
Otomata - Additive melody making looping tool