Since I have most of my DVD collection covered, I've decided to focus some more of my time and money towards expanding my music collection. I want to get all the best CDs and songs from the periods of the 50s, 60s, 70s, 80s, and 90s. So tell me: which artists are absolutely essential to such a collection? Genres I'd like to focus on include: Rock 'n' Roll, jazz, Rhythm & Blues, and Soul. Who are/were the best Rock 'n' Roll, jazz, Rhythm & Blues, and Soul artists? Which songs/albums marked their careers and should be had in all collections? BTW, I currently have quite a few Elvis Presley CDs (including "unofficial" releases) in my collection so I think I have music made by The King covered. Hopefully we'll get a lot of replies to this thread so I can start building my collection. My goal is to have a very wide variety of artists and music in my collection (to impress the ladies and add to my own enjoyment and love of music). 100 CDs per genre mentioned above is my goal. EDIT: Keep in mind that I already have CDs from the following artists: The Platters, Jewel, Sarah McLachlan, The Doors, LeAnn Rimes, Liberace, The Beatles, Elvis Presley, The Temptations, Sarah Vaughan, Diana Krall, Janis Siegel, Meatloaf, The Righteous Brothers, Roy Orbison, Eric Clapton, Cheryl Lynn, James Brown, Celine Dion, Mel Torme`, Tom Jones, and Paula Cole.