Amazon's $5 albums for April 2011

Every month Amazon sells 100+ albums in mp3 format for $5.00. It's why I've been doing most of my music shopping from Amazon rather than iTunes. It's a relatively inexpensive way to check out some really good music. Unlike the iTunes store, where a sale is a clue to crap, Amazon puts the good stuff on sale. For instance:

Raphael Saadiq, The Way I See It.  Old School R & B. Saadiq's band backed Mick Jagger at the Grammys this year.
Lucinda Williams Little Honey  I haven't heard anything of hers that I don't like. Sort of Americana/Country something.
John Coltrane, A Love Supreme  Right?
Old Crow Medicine Show.  O.C.M.S.  Modern Bluegrass.

There's also greatest hits packages for the Ramones, Creedence, R.E.M., Patsy Cline, Ray Charles and others. I like those for artists that I'm curious about but don't know where to start (Like Patsy Cline).