Amazon is offering over 2500 free MP3 downloads right now.
There are a lot of musicians I have never heard of but there are also some good ones in there.
I downloaded The Sweetest Thing and Ain’t No Mountain High Enough.
Look for the Extreme Party Animals as they have some great cover songs- like Don’t Stop Believin. Also I saw some songs for kiddos in the My Favorite Kidsongs collection.