It's rare that saxophonist David Sanborn gets a notion to do something more adventurous than sitting in with the Letterman show's band. As a king of the smooth-jazz world, why should he? Inside, however, does take a couple of chances, though nothing on the order of 1991's Another Hand. Cassandra Wilson sits in for a dry reading of Aretha's "Day Dreaming" that suggests she's best in slightly more daring company; this take doesn't improve on either the original or on Mary J. Blige's recent cover. (For a revelatory Wilson cameo, check out her version of Muddy Waters's "Country Girl" on Javon Jackson's A Look Within.) Likewise, Sting ("Ain't No Sunshine") and perennial nonentities Lalah Hathaway and Eric Benet ("When I'm with You") bring little to their guest-vocal turns. As for the seven instrumental cuts, Sanborn and producer Marcus Miller rarely rise above midtempo mush.