Someone was obviously paying attention in 1990 when the Robert Johnson box set began to gallop up the charts on its way toward more than 500,000 sales. Bonnie Raitt's breakthrough the year before didn't hurt the cause of acoustic blues, either.

Both of which explain why Keb' Mo' finds himself on the newly revived OKeh Records, which Epic hopes to make an eclectic blues label. A Los Angeles studio...