Sisters Brothers

As its title implies, this is a spiritually based collaboration from three distinct – even disparate – yet surprisingly harmonious voices. Mostly, but not entirely acoustic, the trio of rootsy singers trade lead vocals on smooth jazz/blues ("Bessie's Dream"), folk-blues ("Good Stuff"), Delta blues ("Rolling Log"), gospel (an a cappella version of Sister Rosetta Tharpe's "Rock Daniel"), and combinations of those genres. On paper it sounds scattershot, but in actuality this is a thoughtfully paced combination of styles, united by three affecting voices. Eric Bibb's smoother Keb' Mo' approach meshes surprisingly well with Rory Block's more penetrating Delta croon and Maria Muldaur's sassy, sexy, throaty growl.

Released a year after Eat a Peach, Brothers and Sisters shows off a leaner brand of musicianship, which, coupled with a pair of serious crowd-pleasers, "Ramblin' Man" and "Jessica," helped drive it to the top of the charts for a month and a half and to platinum record sales. This was the first album to feature the group's new lineup, with Chuck Leavell on keyboards and Lamar Williams on bass, as well as Dickey Betts' emergence as a singer alongside Gregg Allman. The tracks appear on the album in the order in which they were recorded, and the first three, up through "Ramblin' Man," feature Berry Oakley - their sound is rock-hard and crisp…