Dickey Betts

The late Allman Brothers Band guitarist opened an important door.

The two first crossed paths in the '70s and jammed together several times over the years.

Co-founder of the Allman Brothers Band was 80 years old.

He'd been suffering from cancer and chronic obstructive pulmonary disease.

Our list tends to focus more on the rootsy side of the Allman Brothers Band's sound – and that's fitting.