20 Y.O.

Original Release Date: 25th September 2006 (U.K.), 26th September 2006 (U.S.)  

Label: Virgin

Original Catalogue Numbers: U.K LP 094633041615, U.K CD 094637315026, U.S. CD 094637315026, U.S LP 094633041615

Produced By: Janet Jackson, James Harris III, Terry Lewis, Jermaine Dupri, LROC, Avila Brothers, Manuel seal, No ID, Luny Tunes

Songs Recorded but not included on Album: Weekend 

Formats: CD, Vinyl, Cassette, Special Edition CD.DVD Box Set 

Certification: Platinum in U.S., Gold in Japan,  

• Johntá Austin – composer (Tracks 2–6, 8–9, 11, 15)

• Bobby Ross Avila – bass, composer, drums, keyboards, producer (Track 12)

• Issiah "IZ" Avila – percussion, drums, producer (Track 12)

• Khia Chambers – composer (Track 2)

• Fran Cooper – make-up

• Larry Corbett – cello (Track 14)

• Kenneth Crear – management

• Ian Cross – recording engineer (Tracks 2–6, 8–9, 11–12, 14–15), audio mixing (15)

• Jermaine Dupri – composer (Tracks 2–6, 8–9), producer (2–6, 8), executive producer, audio mixing (2–6, 8–9)

• Liliana Filipovic – violin (Track 8)

• Bernie Grundman – mastering

• Terrance "T-Love" Harris – personal assistant

• Gerardo Hilera – violin (Track 8)

• John Horesco IV – recording engineer (Tracks 2–6, 8–9)

• Josh Houghkirk – audio mixing assistant (Tracks 2–6, 8–9, 11–12, 14–15)

• Janet Jackson – composer (Tracks 1–8, 10–16), producer (All Tracks), liner notes, executive producer

• Paul Jackson, Jr. – guitar (Tracks 6, 8, 14)

• Jimmy Jam – keyboards (Tracks 8, 11–12, 14–15), producer (All Tracks), additional music (2–4, 6, 9), executive producer, drum programming (11, 14–15), audio mixing (11–12, 14–15)

• Suzie Katayama – string arrangements (Tracks 8, 14)

• Cheryl Kohfeld – viola (Track 8)

• Terry Lewis – composer (Tracks 1–4, 6–16), producer, additional music (2–4, 6, 9), audio mixing (11–12, 14–15)

• Andrea Liberman – stylist

• Matt Marrin – recording engineer (Tracks 8, 12, 14)

• Diane McDonald – coordination

• Tadd Mingo – assistant engineer

• No I.D. – producer (Track 5)

• Sara Parkins – violin (Track 14)

• Robert Peterson – violin (Track 8)

• James Phillips – composer (Tracks 2, 6, 9)

• Michele Richards – violin (Track 14)

• Steve Richards – cello (Track 14)

• Brenda Russell – composer (Track 5)

• Manuel Seal, Jr. – composer, producer (Tracks 3–4, 8)

• Vida Sparks – project coordinator

• Rudolph Stein – cello (Track 8)

• Phil Tan – audio mixing (Tracks 2–6, 8–9, 11–12, 14–15)

• Josephina Vergara – violin (Track 14)

• Benjamin Ward – art direction, packaging

• James White – photography

• Chuck Wilson – assistant recording engineer (Tracks 3–5, 8, 11)

• Ghian Wright – assistant recording engineer (Tracks 12, 14–15)

• Johnny Wright – executive producer, management

• Janet Zeitoun – hair stylist

• Yang-Qin Zhao – cello (Track 8)

• Danny Zook – sample clearance