2. The Allman Brothers
The Allman Brothers were such a powerful force that one of the two brothers died in 1971 and the group still lasted another 43 years. Duane may have been missed the vast majority of their run, but he laid the groundwork for everything that followed. Just listen to At Fillmore East: Live music just doesn't get much better than those insanely jammed-out versions of "Whipping Post" and "Mountain Jam." The lineup shifted around a bit, but fans flocked to New York every March to see the group's annual stand at the Beacon Theater. The whole thing ended last October, but Gregg Allman continues to play the music at his solo shows.