For me, definitely Classic Rock, as in Styx, Boston, Heart, Deep Purple, Bad Company, AC/DC, Santana, Chicago, ELO, Queen, Steppenwolf, Grand Funk Railroad and so on. Then there is, Three Dog Night, Safaris, Ventures, Paul Revere/Raiders, Blood-Sweat-Tears and so on. From there, add on, The Bee Gee's, Casey & Sunshine Band, Kool & The Gang, Earth-Wind & Fire, and other Disco groups. Also, throw in some Motown, Oldies and old (not "really old" though) Country. Country, as in Garth Brooks, George Strait, Brooks & Dunn, Terry Clark, Diamond Rio, Little Texas and so on. That's it.
Wife, Classic Rock, Motown, Oldies, Country (again, the "old" stuff, but not "really old") and Disco.