Create Music with these online tools and appsMusic Shake is a very easy, free and fun way to create professional sounding music using loop-based sequencing. You can run the application online or download it.
iNudge is an easy-to-use online step sequencer. You can layer several sequences to create a complex texture.
Audiotool combines loop-based sequencing with virtual drum machines, synths, sequencers and effects. Very fun but with a decent learning curve. Check out the video tutorials on YouTube for help.
Jam Studio is a cool online application that allows you to experiment with chord progressions in a variety of styles.
Audacity is a free download of a multitrack audio recorder. You can change pitch, add effects and do other fun things to audio files you create.