This site provides tutorials on how sound works and allows one to experiment with "strings" of different lengths and widths. these can be combined to create a song.

The Freesound Project aims to create a huge collaborative database of audio snippets, samples, recordings, bleeps, ... released under the Creative Commons Sampling Plus License. The Freesound Project provides new and interesting ways of accessing these sa

ccMixter is a community music site featuring remixes licensed under Creative Commons where you can listen to, sample, mash-up, or interact with music in whatever way you want.Remixers If you’re into sampling, remixing and mash-ups grab the sample packs