Gregory E. Jacobs. "Jam Knock" contains an interpolation of "I Can't Wait", written by John Robert Smith. Personnel Musicians Brian McKnight – lead vocals, background vocals , all instruments , keyboards , additional keyboards , keyboard programming , rhythm and vocal arrangement Murray Adler – violin Rick Baptist – trumpet/cornet Bob Becker – viola Peter Black – all instruments Gary Bovyer – bass clarinet Denyse Buffum – viola Susan Chatman – violin Ron Clark – violin Jon Clarke – English horn DJ (Step Up) Clue – background vocals Lisa Cochran – background vocals Larry Corbett – cello Louise De Tullio – alto flute David Duke – French horn Bruce Dukov – violin Chris Ermacoff – cello Charles Farrar – drum programming Kim Fleming – background vocals Armen Garabedian – violin Berj Garabedian – violin James Getzoff – violin Harris Goldman – violin Endre Granat – violin Mark Hammond – drum programming Scott Haupert – viola Tom Hemby – classical guitar Dann Huff – guitars Rodney Jerkins – additional drum programming Suzie Katayama – orchestra contractor/coordinator and cello Peter Kent – violin Dan Greco – percussion Janet Lakatos – viola Joy Lyle – violin Mike Markman – violin Mase – rap vocals Jerry McPherson – guitars Joe Meyer – French horn Bill K. Meyers – orchestra arrangement Oscar Meza, Jr. – bass Ralph Morrison – violin Anthony Nance – drum programming , all instruments Maria Newman – viola Bob Peterson – violin Poke & Tone – drum programming Barbra Porter – violin Kelly Price – background vocals and vocal arrangement Steve Richards – cello Cory Rooney – keyboards Jay Rosen – violin Anatoly Rosinsky – violin Gerry Rotella – alto flute John Scanlon – viola Haim Shtrum – violin Dan Smith – cello Rudy Stein – cello Troy Taylor – background vocals and drum programming , rhythm and vocal arrangement Keith Thomas – arrangements, piano, synthesizer, and bass programming Brad Warnaar – French horn John Wittenberg – violin Don Williams – percussion Willie Max – background vocals Ken Yerke – violin David Young – bass Bob Zimmitt – percussion Technical Tom Bender – assistant mix engineer Brant Biles – mix engineer Peter Black – mix engineer "Bassy" Bob Brockmann – mix engineer Andy Cardenas – recording engineer Doug Elkins – assistant engineer Dan Evans – production coordinator Mick Guzauski – mix engineer Doug "The Colonel" Kern – assistant engineer Paul Logus