What Is Your All Time Favorite Music Group, and Why?

Mine? ABBA, no doubt about it. Timeless, great songs, beautiful voices, bewitching rhythms, Fun music, emotional substance, eminently danceable, wears well, beautiful to watch in performance, tragic touching storyline for the band, and they never came back again after it was over to perform as a band and spoil all the wonderful memories. Oh, I almost forgot: Agnetha!