Musically, what artists or groups will be the classics of the last 100 years?

I stumbled onto this recording of Pink Floyd’s Hits. It’s over an hour of music, but I highly recommend it if you’ve got the Time (pardon the pun). I expect that this is one group that was original enough and creative enough that their music will be appreciated hundreds of years in the future. Who do you think should be on the list. Who will be the Bachs and Beethovens of the age of popular music?