It’s appropriate that Boz Scaggs’ new album is Out of the Blues, since the blues is what first sparked his five-decade musical career. Scaggs joined the Steve Miller Band in San Francisco, performing on that group’s albums Children of the Future and Sailor, before launching his solo career with 1968’s seminal Boz Scaggs LP, recorded in Muscle Shoals, AL for Atlantic Records. Scaggs continued to mine a personalized mix of rock, blues and R&B influences, along with a signature style of ballads on such influential ’70s albums as Moments, Boz Scaggs & Band, My Time, Slow Dancer and 1976’s Silk Degrees. The latter release became a massive commercial breakthrough, reaching Number Two and remaining on the album charts for 115 weeks. It spawned three Top 40 hit singles: “It’s Over,” “Lido Shuffle” and the Grammy-winning “Lowdown.” Subsequently, “We’re All Alone” from that same album, would become a #1 single for Rita Coolidge. Silk Degrees was followed by the albums Down Two Then Left and Middle Man, and such hit singles as “Breakdown Dead Ahead,” “Jo Jo” and “Look What You’ve Done to Me.”