BOZ SCAGGS  The genre-blending genius takes on classic songs in a historic studio  By Jeff Tamarkin Play Boz Scaggs’ 44-year-old debut album, his 1976 multiplatinum megahit Silk Degrees, or his pair of standards records from the past decade, and one constant emerges from his music: He remains true to his vision, finding that sweet spot where R&B, pop, jazz, blues and rock intersect and then customizing it. Scaggs’ attention to detail, level... 

GLENN FREY The Eagles’ co-leader takes a solo flight through classic love songs  “The Eagles is the mothership,” says Glenn Frey. “We venture to and from that.” For his first solo album in 20 years, the 63-year-old Detroit native ventured far indeed: After Hours is a collection of love songs dating from the ’40s to the present. Producing with Richard F.W. Davis and Michael Thompson, Frey gives candlelit treatment to such gems as Johnny...