You will find links to websites for composing on this page!
Soundation: Soundation (can be used for video games on Scratch)
Beepbox: Beepbox (can be used for video games on Scratch)
Incredibox: Incredibox
Groove Pizza: Groove Pizza (can be used for video games on Scratch)
Online Sequencer: Online Sequencer
Jam Studio: Jam Studio