Question: when was American singer that  Manuel Seal has as credits born 

Context articles: It's Like That (Mariah Carey song)
Understanding (song)
Manuel Seal
Always Be My Baby
20 Y.O.
We Belong Together
Janet Jackson
Kick Your Game
With U
Just Kickin' It

"It's Like That" is a song by American singer and songwriter Mariah Carey for her tenth studio album, "The Emancipation of Mimi" (2005).
 Written by Carey, Jermaine Dupri, Manuel Seal, and Johntá Austin, and produced by Carey, Dupri, and Seal, the song borrows the hook "It's Like That Y'all" from the Run–D.M.C. tracks "Hollis Crew" (1984) and "Here We Go (Live)" (1983).
 "Stay the Night", "Say Somethin'" and "Shake It Off" were all contenders for the lead single.
 However, plans were changed when Island Def Jam Music head L.A. Reid suggested to Carey she record a few more strong songs to ensure the album's success, therefore "It's Like That" was written and chosen as the album's lead single, being released on January 7, 2005.
"Understanding" is a song by American R&B group Xscape.
 Written by Manuel Seal,
Manuel Seal, Jr. (born September 26, 1960) is an American musician, record producer, composer, singer, songwriter, vocal coach, and arranger.
 His credits include artists as Mariah Carey, Janet Jackson, Usher, TLC, Aretha Franklin, Xscape, Cherish, Tyrese, Alicia Keys, Ashanti, Monica, Lionel Richie, Avant, Gladys Knight, Aaron Hall, George Benson, Mary J Blige, Da Brat, Jagged Edge, El DeBarge, Shanice, Johnny Gill, LSG, Tamia, Gerald Levert, Marc Dorsey and Destiny's Child.
 He has won one Grammy Award from 13 nominations.
 Manuel Seal is the owner and CEO of Seal Music Productions.
 Inc. and S.L.A.C.K.A.D. Music.
"Always Be My Baby" is a song by American singer and songwriter Mariah Carey from her fifth studio album "Daydream" (1995).
 It was released by Columbia Records in March 9, 1996 as the third US single and fourth overall.
 The song was written by Carey, Jermaine Dupri and Manuel Seal.
 A mid-tempo song, its lyrics describe the feeling of attachment and unity the singer feels towards her estranged lover, even though they are no longer together, she says he will always be a part of her and will "always be her baby" even after they move on.
20 Y.O. is the ninth studio album by American singer Janet Jackson.
 Released on September 20, 2006, by Virgin Records, the title makes reference to her third studio album "Control" which was released in 1986, a commemoration to its twentieth anniversary.
 "20 Y.O." represents the "celebration of the joyful liberation and history-making musical style" of "Control".
 An R&B and dance album, Jackson enlisted a range of producers to work on material with, including LRoc, Manuel Seal, The Avila Brothers and No I.D., in addition to her longtime partners Jimmy Jam and Terry Lewis and then-boyfriend Jermaine Dupri.
"We Belong Together" is a song by American singer Mariah Carey from her tenth studio album, "The Emancipation of Mimi" (2005).
 The song was released on March 29, 2005, through Island Records, as the second single from the album.
 "We Belong Together" was written by Carey, Jermaine Dupri, Manuel Seal, and Johntá Austin, and produced by the former three.
 As the song samples lyrics from Bobby Womack's "If You Think You're Lonely Now" (1981) and the Deele's "Two Occasions" (1987), several other songwriters are credited.
 "We Belong Together" is built on a simple piano arrangement with an understated backbeat.
 The lyrics chronicle a woman's desperation for her former lover to return.
Janet Damita Jo Jackson (born May 16, 1966) is an American singer, songwriter, dancer and actress.
 Known for sonically innovative, socially conscious, and sexually provocative records, elaborate stage shows, and high-profile television and film roles, she has been a prominent figure in popular culture for over 30 years.
"Kick Your Game" is a song recorded by American group TLC for their second studio album "CrazySexyCool" (1994).
 The "funky" R&B-dance track was written by group's frequent collaborator Jermaine Dupri, his musical partner Manuel Seal and member Lisa "Left Eye" Lopes.
 In August 1995, it was picked by LaFace and Arista Records to be released as a promotional airplay single for the album.
 The song's context had the trio teaching guys who flirt in the club "the proper way to approach a lady" with Lopes' rap verses were said to reference her then-boyfriend American football player Andre Rison, the one whose house Lopes infamously burnt during the making of "CrazySexyCool".
"With U" is a song recorded by American singer Janet Jackson for her ninth studio album, "20 Y.O." (2006).
 It was written by Johnta Austin, Jackson, Jermaine Dupri, Manuel Seal, Jr., James Harris III, and Terry Lewis, with production handled by the latter five.
 It was released exclusively to selected urban radio formats on December 11, 2006 as the fourth overall single from the album by Virgin Records.
"Just Kickin' It" is a song by American R&B group Xscape.
 Written by Jermaine Dupri and Manuel Seal,