Tree is the name of at least 9 different artists:
1. A rapper/producer from Chicago, Illinois, United States
2. A psychedelic band from Israel
3. A hardcore band from Massachusetts, United States
4. A grindcore band from Kansas, United States
5. A rock band active in the 1960's
6. A singer/songwriter from California, United States
7. A pop singer from Australia
8. A rock band from Australia (now called Treehouse)
9. A Christian rock band from South Africa (now called Tree63)
10. Project of Oliver Nickell from San Francisco, California

Read more about Tree on Last.fm.