Here are some songs from youtube I liked very much.
Some videos are not allowed to be embedded, so here I just post the links:
1. http://www.youtube.com/watch?v=_daG9nUAXLE
2. http://www.youtube.com/watch?v=QA0Fv0WvgE8
3. http://www.youtube.com/watch?v=eNEJhZNhJVw
4. http://www.youtube.com/watch?v=PoTcfsk09Ak