Allmusic awarded the album with 4 stars and its review by Rob Theakston states: "Marcus Miller continues to display his multi-instrument virtuosity with M², and while the order of the day is still smooth jazz, there's more of a soulful R&B edge than the majority of his previous work. It also features an all-star cast that includes Herbie Hancock, Branford Marsalis, Raphael Saadiq, Paul Jackson, Jr., and Lenny White among others."
Personnel
Marcus Miller – synthesizer, bass, guitar, vocals, engineer, executive producer, vocoder, drum programming, Wurlitzer
Wayne Shorter – soprano saxophone
Branford Marsalis – soprano saxophone
James Carter- tenor sax
Maceo Parker – alto saxophone
Kenny Garrett – alto saxophone
Fred Wesley – trombone
Hubert Laws – flute
Larry Corbett – cello
Joel Derouin – violin
Matt Funes – viola
Herbie Hancock – piano
Hiram Bullock – guitar
Paul Jackson, Jr. – acoustic guitar
Leroy Taylor – synthesizer bass
Chaka Khan – vocals
Djavan – vocals, scat
Raphael Saadiq – vocals on "Boomerang"
Poogie Bell – drums
Vinnie Colaiuta – drums on "It's Me Again"
Mino Cinelu – percussion
David Isaac – triangle, producer, overdubs, cowbell, mixing, co-producer, water effects
Lenny White – percussion, synthesizer bass
Bernard Wright – organ, Fender Rhodes
Harold Goode – executive producer
Harry Martin – executive producer
Production
Ray Bardani – Mixing
David Isaac – Engineer and Mix Engineer
Enrico DePaoli – Engineer
Jack Frisch – Art Direction, Design
Richard Furch – Assistant Engineer
Bibi Green – Production Coordination
Charles Harrison – String Copyist, String Transcription
Khaliq-O-Vision – Engineer
Paul Mitchell – Engineer
Malcolm Pollack – Engineer
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