Strange. My husband & I were just in a record store yesterday, and bought an Allman Brothers album, after I was explaining to my husband the unusual lineup of the original band (2 lead guitarists, 2 drummers).
I went to an Allman Brothers concert once--about 15 years ago now--and it was great. I always loved what Gregg brought to the Allman Bros sound--such great organ work & a terrific voice.