I’ve mostly used AUDACITY for sound recording and editing, usually dealing with EFL-type listening tasks.  However, there are some good sites that focus on creating digital music.  This can open up some interesting projects for students, and could even have a specific focus in language teaching when it comes to stress and intonation, or producing a digital ‘jazz chant’.

Top 10 Sites for Creating Digital Music

1. Myna – Far and away my favorite online music editor. This is very similar to Garageband and a nice alternative for those who do not have the Apple application.
2. Soundation – Very easy to use, with a drag/drop interface for creating excellent-sounding music.
3. Jam Studio –  Fun site that lets users select a “key” to play in and a theme to match.
4. Loop Labs – Nice time- line editor; learning curve is a bit higher than most sites.
5. Your Spins – Great site for mixing prerecorded music and sharing with others.
6. Indaba –  Unique site where users can create collaborative music pieces to make one final product.
7. Creating Music – Very user friendly website shows kids how to create digital music.
8. Contrapunctus Variations –  Wonderful site for creating orchestral music by selecting an instrument and clicking on a time line.
9. iNudge –  Fun site for kids, who can make music by drawing shapes.
10. Glitchscape – Create sound by drawing vector shaped rectangles.

From http://www.techlearning.com/blogs_ektid30880.aspx