Credits adapted from album's liner notes.
NSYNC •
Lance Bass – backing and occasional lead vocals (bass) •
JC Chasez – lead and backing vocals (first tenor/melody) •
Joey Fatone – backing and occasional lead vocals (baritone) •
Chris Kirkpatrick – backing and lead vocals (countertenor/falsetto) •
Justin Timberlake – lead and backing vocals (second tenor/melody)
Additional personnel • Troy Antunes — bass (track 7) • Lou Appel — drums and percussion (track 1) • Joey Argero — bass (tracks 5, 6) • Alan "Double A" Armitage — mixing assistant (tracks 2–9, 12–14) • Billy Ashbaugh — drums (track 7) • Adam Barber — engineer (tracks 2, 4, 7, 9, 11–14, 16) • Johann Bast — strings (track 12) • Tony Battaglia — guitars (track 7) • David Bjella — strings (track 12) • Joanie Bjella — strings (track 12) • Scott Bliege — horns (track 6) • Gary Carolla — producer (tracks 5, 6, 8, 10), keyboards and drums (5, 6, 8), arranger (5, 8), vocal arranger (10) • Deborah Cole — additional vocals (track 1) •
Tom Coyne — mastering • Frank Delour — drums and percussion (track 1) • Rob Dorsey — drums and percussion (track 1) • Lisa Ferrigno — strings (track 12) • Keith Fluitt — additional vocals (track 1) • Andricka Hall — additional vocals (track 1) • Lawrence Hamilton — additional vocals (track 1) • Matt Harris — assistant engineer (tracks 2–5, 7, 9, 11–14) • Al Henberger — engineer (track 3) • Ben Holt — assistant engineer (track 1) • Manfred Honetschläger — strings arranger and conductor (track 10) • John James — additional vocals (track 1) • Stephanie James — additional vocals (track 1) • Jürgen Kaiser — strings engineer (track 10) • Mark Kiczula — assistant engineer (tracks 1, 5) • Jim Kimball — engineer (track 11) • Steve MacAuley — engineer (track 8) •
Danny Madden — vocal co-producer (track 1) • Pat McMakin — mixing (track 11) • Ann Mincieli — assistant engineer (track 1) • Frank Motnik — assistant strings engineer (track 10) • John Poppo — producer, arranger, engineer, and mixing (track 1) • Jim Porreca — engineer (tracks 5, 6), assistant engineer (5) • Jason Rea — assistant engineer (track 1) • Giles Reaves — assistant engineer (track 11) • Mia S. Rebel — additional vocals (track 1) • Veit Renn — producer (tracks 2, 4, 7, 9, 12–16), guitar (4), strings arranger and conductor (12) • Mike Rew — assistant engineer (track 1) •
Nicki Richards — additional vocals (track 1) •
Peter Ries — producer, engineer, mixing, keyboards, and programming (track 10) •
Evan Rogers — producer (track 3) • Don Rogozinski — horns (track 6) • Jennie Rudberg — strings (track 12) • Peter "Ski" Schwartz — keyboard arrangements, string arrangements, and additional vocal arrangements (track 1) • Mark Silverman — assistant engineer (tracks 2–4, 7, 9, 11–14) • Andre Smith — additional vocals (track 1) • Joe Smith — mixing (tracks 2–9, 12–14) • Brian Snapp — saxophone (track 7) •
Carl Sturken — producer (track 3) • Chris Trevett – mixing (track 16) • Mike Tucker — engineer (tracks 3, 5, 6, 8, 10), additional vocal engineering (1) • Voices of Praise — additional choir vocals (track 4) • Rex Wertz — horns (track 6) • Robin Wiley — producer and arranger (track 11) ==Charts==