Gregg Allman's most visible contribution to rock music is as lead singer, organist, and songwriter with the Allman Brothers Band, founded by his brother Duane (d. 1971) in 1969. He has never threatened to eclipse the band that carries his family name, but he has found occasional success and popularity with his solo work, which is distinctly different, more soulful and less focused on high-wattage virtuosity. Allman's instrument is the organ, and he is most effective, when he is in top form, as a singer. His first instrument, ironically enough, was the guitar, and he took it up before his older brother Duane did. But Duane learned it better and quickly eclipsed Gregg. Where Gregg did excel was on the organ and as a singer (a role Duane was never comfortable with), which proved important but not at the center of a group that became famous for its 40-minute instrumental jams and three-hour sets. Through their early efforts, in bands like the Allman Joys and the Hour Glass, they shared the spotlight, with Duane taking the lengthy solos and Gregg fronting the band and offering Booker T. Jones-type keyboard playing. Liberty Records signed the Hour Glass and tried making Gregg into the focus of their efforts during the late '60s, but it never quite worked.
When the Allman Brothers were organized, the flashy (and vital) instrumental moments belonged to his brother and Dickey Betts and, later still, Warren Haynes. Gregg's songs, however, including "Whipping Post" and "Midnight Rider," were among the group's notable originals during its classic period, 1969-1972. Beginning with Brothers and Sisters, Betts' songwriting and singing assumed increasing prominence.
It was during the period that Brothers and Sisters was burning up the charts that Gregg Allman emerged as a solo artist with his first album, the critically well-received hit Laid Back, which put the softer, more serious, soul- and gospel-tinged side of his work in sharper focus. A tour followed, which yielded a live album that was also a success. This first period of solo popularity was interrupted by a combination of professional and personal conflicts; the Allman Brothers Band toured extensively and struggled to come up with a follow-up to Brothers and Sisters, and Gregg Allman began a relationship with Cher, the ex-wife and singing partner of Sonny Bono, which resulted in a tumultuous series of marriages and divorces for the two. These activities were played out amid Allman's well-publicized drug problems, which culminated with his testifying against a band employee in a federal drug case, which, in turn, led to the temporary but extended dissolution of the Allman Brothers Band.
Ironically, it was during this period, in 1977, that he delivered Playin' Up a Storm, a pop-soul effort that proved to be his most accomplished and successful album. Alas, this was to be the peak of his career away from the band. His next two albums, I'm No Angel and Just Before the Bullets Fly, released at the end of the 1980s, were quickly eclipsed by the re-formed and reinvigorated Allman Brothers Band's success on-stage and on record. His 1997 release Searchin' for Simplicity and the double-CD anthology One More Try had none of the urgency or success of the band's activities. In 2009, Australia's Raven Records imprint issued a 19-track, single-disc retrospective, entitled The Solo Years 1973-1997: One More Silver Dollar, that covered the whole of Allman's solo career to that date from his years at Capricorn and Columbia. In 2011, some 14 years after his last solo album, Allman released the T-Bone Burnett-produced Low Country Blues on Rounder Records.