Gwen Stefani – vocals Tom Dumont – guitar Tony Kanal – bass Adrian Young – drums, percussion Eric Stefani – piano, keyboards - Additional musicians Phil Jordan – trumpet and flugelhorn Gabrial McNair – trombone, additional percussion Gerard Boisse – saxophone (tracks 5, 7, 14) Stephen Perkins – steel drum (track 1) Aloke Dasgupta – sitar (track 6) Melissa Hasin – cello (tracks 8, 10) Bill Bergman – saxophone (tracks 11, 12) Les Lovitt – trumpet (tracks 11, 12) Greg Smith – baritone saxophone (tracks 11, 12) Nick Lane – trombone (tracks 11, 12) Matthew Wilder – additional keyboards (tracks 3, 6) Albhy Galuten – director of paradigm (track 5) No Doubt (1992) The Beacon Street Collection (1995) Tragic Kingdom (1995) Return of Saturn (2000) Rock Steady (2001) Push and Shove (2012)