Music from Harold and Maude?

All the songs are done by Cat Stevens. I don't think an official soundtrack was ever released (except, I believe , in Japan), but the tracklist is as follows:

Don't Be Shy        
On The Road To Findout        
I Wish, I Wish        
Miles From Nowhere        
Tea For The Tillerman        
I Think I See The Light        
Where Do The Children Play        
Trouble        
If You Want to Sing Out, Sing Out        

Happy hunting!

An official vinyl soundtrack was released in Dec. 2007, but has been sold out for a long time. It sometimes pops up on eBay. You can make your own soundtrack by purchasing the following Cat Stevens CDs: Footsteps in the Dark, Mona Bone Jakon, and Tea For The Tillerman.