The Stanford prison experiment was unfunded.
Brothers and Sisters is the fourth studio album by American rock band the Allman Brothers Band .. studio album. studio album. rock. Rock music. the Allman Brothers Band. the Allman Brothers Band. Produced by Johnny Sandlin and the band themselves , the album was released in August 1973 in the United States by Capricorn Records .. Capricorn. Capricorn Records. Produced. Record producer. Capricorn Records. Capricorn Records. Following the death of group leader Duane Allman in 1971 , the Allman Brothers Band released Eat a Peach -LRB- 1972 -RRB- , a hybrid studio / live album that became their biggest yet .. the Allman Brothers Band. the Allman Brothers Band. Duane Allman. Duane Allman. Eat a Peach. Eat a Peach. Afterwards , the group purchased a farm in Juliette , Georgia , to become a `` group hangout '' .. However , bassist Berry Oakley was visibly suffering from the death of Duane  : he excessively drank and consumed drugs .. Berry Oakley. Berry Oakley. After nearly a year of severe depression , Oakley was killed in a motorcycle accident not dissimilar from his friend 's in November 1972 making it the last album to feature bassist Berry Oakley , the first to feature bassist Lamar Williams and pianist Chuck Leavell .. Berry Oakley. Berry Oakley. depression. depression ( mood ). Lamar Williams. Lamar Williams. Chuck Leavell. Chuck Leavell. The band carried on , adding new members Chuck Leavell on piano and Lamar Williams on bass .. Lamar Williams. Lamar Williams. Chuck Leavell. Chuck Leavell. piano. piano. bass. bass guitar. Brothers and Sisters was largely recorded over a period of three months at Capricorn Sound Studios in Macon , Georgia .. Macon. Macon, Georgia. Capricorn. Capricorn Records. Lead guitarist Dickey Betts assumed the role of band leader , and many of his compositions reflected a more country-inspired sound .. Dickey Betts. Dickey Betts. country. country music. Session musicians Les Dudek and Tommy Talton sat in to play guitar on several songs .. Les Dudek. Les Dudek. The album was being produced at the same time as vocalist / organist Gregg Allman 's solo debut , Laid Back , and features many of the same musicians and engineers .. Gregg Allman. Gregg Allman. Laid Back. Laid Back ( album ). The front album cover features a photograph of Vaylor Trucks , the son of drummer Butch Trucks and his wife Linda .. Butch Trucks. Butch Trucks. The back cover features a photograph of Oakley 's daughter Brittany and his wife Linda .. The album represented the Allmans ' commercial peak  : it has sold over seven million copies worldwide , landing it at the time atop of the Top 200 Pop Albums for five weeks .. Top 200 Pop Albums. Billboard 200. `` Ramblin ' Man '' became the band 's first and only hit single , peaking at number two on the Billboard Hot 100 in 1973 .. hit single. hit single. The album was followed by a tour of arenas and stadiums , but marred by drug problems , strained friendships and miscommunication between the group members .