Roots of Gregg Allman

Judith Glory Hill is an American singer-songwriter from Los Angeles, California. She has provided backing vocals for such artists as Michael Jackson, Prince, and Josh Groban. In 2009, Hill was chosen as Jackson's duet partner for the song "I Just Can't Stop Loving You" during his This Is It rehearsals. After Jackson's death in 2009, she, along with the rest of the This Is It cast members, performed at Jackson's memorial service and attracted global attention when she sang the lead on the song "Heal the World". Hill's rise to fame is recounted in 20 Feet from Stardom, a documentary film that tells the untold story of the backup singers behind some of the "greatest musical legends of the 21st century". She is also a featured artist on the film's soundtrack. She won the Grammy Award for Best Music Film for her performance.

Delaney & Bonnie were an American duo of singer-songwriters Delaney Bramlett and Bonnie Bramlett. In 1969 and 1970, they fronted a rock/soul ensemble, Delaney & Bonnie and Friends, whose members at different times included Duane Allman, Gregg Allman, Eric Clapton, George Harrison, Leon Russell, Bobby Whitlock, Dave Mason, Steve Howe, Rita Coolidge, and King Curtis.

Riley B. King, known professionally as B. B. King, was an American blues guitarist, singer, songwriter, and record producer. He introduced a sophisticated style of soloing based on fluid string bending, shimmering vibrato, and staccato picking that influenced many later electric guitar blues players. AllMusic recognized King as "the single most important electric guitarist of the last half of the 20th century".

Idlewild South is the second studio album by American rock band the Allman Brothers Band. With the exception of one song, the album was produced by Tom Dowd and was released on September 23, 1970 in the United States, by Atco Records and Capricorn Records. Following the release of their 1969 debut, the Allman Brothers Band toured the United States extensively to promote the album, which had little commercial success. Their performances, however, did create positive word of mouth exposure that extended to more famous musicians, such as Eric Clapton, who invited group leader Duane Allman to contribute to his 1970 album Layla and Other Assorted Love Songs.

"Nobody Knows You When You're Down and Out" is a blues standard written by pianist Jimmie Cox in 1923 and originally performed in a Vaudeville-blues style in the aftermath of the 1920–1921 U.S. economic depression. A later 1929 recording by Bessie Smith became popular during the early years of the Great Depression due to the lyrics highlighting the fleeting nature of material wealth and the friendships that come and go with it. Since Smith's 1929 recording, the song has been interpreted by numerous musicians in a variety of styles.