Saxophonist and composer David Sanborn has always been a maverick. A top-notch technician, he has always imbued his playing with deep emotion -- indeed, that emotional element in his playing has been his signature since he began leading his own bands on record in the 1970s. He has wed modern jazz sophistication to the smooth jazz groove for many years now, and has followed his muse while remaining a commercially viable artist. Closer is another exercise in ambition for Sanborn and his sidemen. They include bassist .