Mils
Classic rock - and something more than drums and noise, I'd say look into Cheap Trick, Fleetwood Mac, Humble Pie, Led Zepplin, and of course the Beatles, Rolling Stones, and early David Bowie. You should probably take a listen to some 'thinking man's rock' like Boston, Yes, Styx, Pink Floyd, Genesis, Meatloaf, and a few others that will no doubt come to me tonight.
Classical light, the Boston Pops in the Fiedler days. Real classic look into the London Philharmonic when John Williams was there.
Easy listening always brings to mind muggle elevator music to me. Montovani and the 1001 Strings are the only names i can think of offhand.
I have a fairly eclectic music collection at the house if you want to delve. I've found most muggles are fairly devoted to one genre and frequently to only one band. A little general knowledge and some specific knowledge about a band or two will go a long way.