Question: Who produced a Mary j. Blige song and for a time was known as MC EZ
Context: Reginald "Reggie" Perry, better known as Syience is a Grammy Award-winning American songwriter, record producer and musician from Flint, MI.  He has worked with a number of recognizable and respected artists, including Beyoncé, Cheryl Cole, Jay-Z, John Legend, Mary J. Blige, Ne-Yo and more.  Syience won two Grammys for his work on Mary J. Blige's "Growing Pains" and Ne-Yo's "Because of You". "You Don't Have to Worry" is a song by American R&B recording artist Mary J. Blige.  The song was written for her by Kenny Greene, Edward Ferrell, Darrin Whittington and Kevin Kornegay, and is produced by former Bad Boy rapper Craig Mack for the soundtrack of the film "Who's the Man? " (1993).  The song contains an uncredited portion of the 1988 hip-hop cut, "The Vapors" as performed by American beat-boxer/rapper Biz Markie, which in turn samples the 1974 number-one R&B hit, "Papa Don't Take No Mess", as performed by James Brown.  The original version appears on the film's soundtrack.  This version performed modestly on the US "Billboard" Hot 100, peaking at number sixty-three, and reaching number eleven on the R&B singles chart.  It is one out of two singles to be released on the soundtrack (the other being "Party and Bullshit" by The Notorious B.I.G.). American singer and songwriter Mary J. Blige began her career as a backing vocalist for Father MC in the early 1990s.  Her discography as a solo artist began in 1992 and consists of thirteen studio albums, two live albums, two remix albums and over eighty singles—including more than 20 as a featured artist.  Blige has sold over 50 million albums and 15 million singles worldwide.  In 2009, "Billboard" magazine ranked Blige as the most successful female R&B artist of the past 25 years, while listing her 2006 song "Be Without You" as the top R&B song of the 2000s, as it spent an unparalleled 75 weeks on the Hot R&B/Hip-Hop Songs chart, 15 of them at number one.  In 2011, VH1 ranked Blige as the 80th greatest artist of all time.  Moreover, she was ranked 100th on the list of "100 Greatest Singers of All Time" by "Rolling Stone" magazine.  In 2012, VH1 ranked Blige ninth among "The 100 Greatest Woman in Music" listing. "Reminisce" is a song by American recording artist Mary J. Blige from her debut album, "What's the 411? ".  The song was co-written by Kenny Greene and Dave "Jam" Hall, the song's producer.  The song contains a sample of "Stop, Look, Listen" by American rapper MC Lyte.  It peaked at number fifty-seven on the "Billboard" Hot 100 and number six on the Hot R&B/Hip-Hop Songs chart.  A more uptempo and hip hop-inspired remix of the song, featuring duo Pete Rock & CL Smooth, later appeared on Blige's 1993 remix album of the same name. Case is the self-titled debut album by American R&B singer-songwriter Case.  It was released on August 13, 1996.  It features the hit single "Touch Me, Tease Me" featuring rapper Foxy Brown and Mary J. Blige.  The album peaked at number seven on the R&B albums chart and reached number forty-two on the "Billboard" 200.  Mary J. Blige (Case's girlfriend at the time) co-wrote the majority of his debut album. "Runaway Love" is the third single released from Ludacris' fifth album, "Release Therapy" (2007).  The song, which features Mary J. Blige on the vocals, was produced by Polow da Don and reached #2 on the "Billboard" Hot 100 singles chart only behind Justin Timberlake's "What Goes Around... Comes Around".  The song was the first single from "Release Therapy" in the United Kingdom and was released as a double A-side with "Girls Gone Wild" included.  The song was performed at the 2007 Grammy Awards show by Ludacris, Mary J. Blige and Earth, Wind & Fire.  A remix of the song is available by T-Pain featuring Cassie. "Seven Days" is a soul song written and produced by Malik Pendleton and released as a single by American R&B singer Mary J. Blige as the fourth release off her 1997 album "Share My World" on March 20, 1998.  The Mary J. Blige album is the fourth and final single from MCA Records. "Love a Woman" is a song recorded by American R&B singer Mary J. Blige featuring Beyoncé from the former's tenth studio album "My Life II... The Journey Continues (Act 1)" (2011).  It was written by Mary J. Blige, Beyoncé, Sean Garrett and Menardini Timothee while production was handled by Garrett, Team S. Dot and BridgeTown.  Originally written for Beyoncé's fourth studio album "4" (2011), the singer felt that it did not fit with the sound she had created for her album, and she thought that it would be better if she recorded it as a duet with Blige instead. Craig Mack (born May 10, 1971) is an American rapper, who gained fame on Puff Daddy's Bad Boy Entertainment record label in the 1990s.  Although his first single was released under the name MC EZ in 1988, he is best known for his 1994 hit single "Flava In Ya Ear", which was released under his real name.  The remix of the single was the breakout appearance of The Notorious B.I.G., as well as one of the first solo appearances by Busta Rhymes.  The success of The Notorious B.I.G.'s debut album "Ready to Die" overshadowed Mack's early success on the Bad Boy label. "Not Gon' Cry" is a 1995/1996 single by American R&B singer Mary J. Blige, from the soundtrack to the film "Waiting to Exhale"; the song is also featured on Blige's 1997 album, "Share My World".  The song was written and produced by Babyface and became a major hit for Blige in the US, where it peaked at number one and two on the "Billboard"'s R&B Singles and Hot 100 charts respectively.  The single sold 900,000 copies domestically and was certified platinum by the RIAA.  Blige received her third Grammy Award nomination for Best Female R&B Vocal Performance (her first nomination in that category) at the 39th Grammy Awards in 1997 for the song.  Coincidentally, other songs on that were later released as singles from the soundtrack ("Exhale" by Whitney Houston and "Sittin' Up in My Room" by Brandy) also received nominations in the same category.  Blige performed the song at the 39th Grammy Awards telecast.
Answer: Craig Mack