Whether or not Jamiroquai's disco-rave dance party has aged well is not the question; the question is have you ever been experienced? Anyone who was of college age in the mid-'90s heard one of these slick, soulful party jams at a backyard kegger or basement session. Those listening closely recognized that for a while there, singer Jay Kay voiced a conscientious counterpoint to the buttery funk of "Emergency on Planet Earth" and "Virtual Insanity." Then he started buying half-million dollar sports cars and graduation demanded getting a job and pretty much everyone forgot about the cat in the hat. This greatest hits package ought to bring it all back.