Amazon claims "293,561 Results" although I haven't checked them all.
Some are big classical collections, some are regular albums, some are "binaural beat brainwave" albums. Tons of singles, too. (Amazon somehow counts those as "albums.") No matter how you slice it, that's an awful lot of music to choose from.
Check out pop remixes of Gregorian chants: http://www.amazon.com/Must-Have-Mystic-Gregorian-Pop-Remixes/dp/B006W9UN96/ref=sr_1_119?s=dmusic&ie=UTF8&qid=1361635188&sr=1-119
Or Bach Orchestral Suites: http://www.amazon.com/Orchestral-Suites/dp/B008PG23GK/ref=sr_1_164?s=dmusic&ie=UTF8&qid=1361635377&sr=1-164
Spend all day scrolling through the list... sure beats doing chores!