Guitar legend and Allman Brothers Band co-founder Dickey Betts has died at age 80. The Rock & Roll Hall of Famer wrote the band's biggest hit, “Ramblin’ Man.” Manager David Spero told The Associated Press that Betts died early Thursday at his home in Osprey, Florida. He says Betts had been battling cancer for more than a year and had chronic obstructive pulmonary disease. Betts shared lead guitar duties with Duane Allman in the original Allman Brothers Band to help give the group its distinctive sound and create a new genre: Southern rock. Acts ranging from Lynyrd Skynyrd to Kid Rock were influenced by the Allmans’ music, which combined blues, country, R&B and jazz with ’60s rock.