I spent a long weekend at the beach reading Otto Friedrich's "City of Nets," about Hollywood in the 1940s.
One day it rained and I didn't get a lot of beach time, so I hit some nearby thrift and antique stores. I had just finished the chapter about the after-hours musical gatherings among Hollywood's music elite.
One of the stores had a huge selection of LPs, and small shelf of CDs. I went through all the LPs and completely struck out. I then decided to look at the CDs, thinking I'd find nothing, and there was the out-of-print double-CD set of Art Tatum playing at Ray Heindorf's cocktail parties.