Where to find Piano sheet music songbooks/Backing tracks

[bizzylizzy]

A friend of mine who's pretty decent on the piano has a birthday soon. She likes popular West End musical type music - Andrew Lloyd Webber, Mamma Mia, We will Rock for example, just to give you to give you an idea... and I was hoping to find her a book of piano sheet music. I also know that you can sometimes purchase a backing track cd, so that the pianist can play along with the orchestra backing. I found one online but wonder if anyone can recommend any sites that I could check out? She likes Rod Stewart and I've found a couple of his American songbooks for sale with piano notation. Any ideas really, thank you.

[Bobbisox]

easier to ignore bizzy, I hope I have been helpful to you:-)