Question: Rahzel was formerly a member of which hip hop group?

Context paragraphs:
Rahzel: Rahzel M. Brown, also known as simply Rahzel, is an American musician, beatboxer and rapper, formerly a member of The Roots.

Uptown 3000: Uptown 3000 was a Korean American hip hop duo on the record label The Machine Group CEO Alvin & Calvin Waters which consisted of Carlos Galvan aka "Cali-Mexci" and Steve Kim aka "Kwon".  The duo was a spinoff of Uptown, a Korean hip hop group which was active in the late 1990s whose sales reached 6 million.  The duo is considered defunct as the original Uptown made its comeback in Korea in 2006, which Kim and Galvan were a part of.  The group has been credited with being the first Korean hip hop group to closely resemble anything similar to American style hip hop.

Mr. J. Medeiros: Jason C. Medeiros better known as Mr. J. Medeiros, is an American Rapper, Record Producer, and Songwriter.  As well as releasing music under the name, Mr. J. Medeiros, he is responsible for forming the Hip Hop group The Procussions, is one half of the Hip Hop/Electronic duo AllttA, and the lead singer of Punk-Rap group KNIVES.  He is of Portuguese and Scottish descent.  Mr. J. has written music with such artists as, Monte Nueble, Noel Zancanella, Randy Jackson, Marty James, Shad (rapper), George "Spanky" McCurdy, Symbolyc One (S1), Illmind, Benny Cassette, Talib Kweli, 20Syl and French hip hop group Hocus Pocus (group) and more famous C2C.

Serbian hip hop: Serbian hip hop refers to all genres of hip hop music in the Serbian language.  The term is also sometimes used to refer to any hip hop music made by Serbs, including instrumental hip hop, as well as rap songs by members of the Serbian diaspora, often in languages other than Serbian.  Beogradski Sindikat is considered to be the greatest Serbian hip hop group, along with others like VIP, Sunshine, CYA.  The most popular solo artists are Skabo, Ikac, Reksona, Juice, Gru, Struka, Ajs Nigrutin, Marchelo, etc.

Ultramagnetic MCs: The Ultramagnetic MCs is an American hip hop group based in Bronx, New York.  Founded by Kool Keith, the group also includes Ced Gee, TR Love, and Moe Love.  Tim Dog became an unofficial member in 1989.  In 1990, DJ Jaycee was added as Roadmanager and backup DJ.  Big.D was put down with the crew by Kool Keith in 1989.  In 2006 Kool Keith and Big.D formed the supergroup The Commissioner, and in 1999 Big.D and D.J Moe-Love also formed the powerhouse group Slaughterhouse-Cartel.  A former member, Rooney Roon, was fired following an assault arrest.  Beat-boxing legend Rahzel was also involved with the group early in its career.  The group's work was associated with unorthodox sampling, polysyllabic rhymes, and bizarre lyrical imagery.

McGruff (rapper): Herbert Brown, better known by his stage name McGruff (also known as Herb McGruff) is an American Hip hop recording artist from Harlem, New York City, New York.  Brown started rapping in his early teens.  He embarked on his music career in the hip hop group Bronx Most Wanted, alongside rappers Jay Q and Tee U.B. Brown later became a member of the hip hop collective Children of the Corn.  As a member of Children of the Corn, Brown worked alongside Big L, Cam'ron, Bloodshed and Mase, all of whom would go on to have successful careers in the music industry.  After the group disbanded without releasing any material, Brown made his first appearance on Big L's debut album, "Lifestylez ov da Poor & Dangerous" (1995), on the tracks "8 Iz Enuff" and "Dangerzone".  Eventually, Brown signed a deal with popular hip hop label, Uptown Records and began recording his debut album, "Destined to Be".  In early 1998, the album's lead single "Before We Start" became a minor hit, charting on several "Billboard" charts.  In the Summer of 1998, "Destined to Be" was released but failed to sell many copies, only peaking at 169 on the "Billboard" 200, and Brown was released from his contract.  Brown would make appearances with Heavy D on his album, "Waterbed Hev" and the "Woo" soundtrack.  In 2009, Brown appeared on Mase's mixtape "I Do the Impossible".  In 2010, he was featured heavily on The Diplomats mixtape, "The D.I.P. Agenda."  In 2014, DJ Kay Slay, enlisted Brown, along with Raekwon, Fat Joe, Ghostface Killah, Sheek Louch, N.O.R.E., Lil' Fame, Prodigy and Rell, for a song titled "90s Flow".

Orishas (band): Orishas are a Cuban hip hop group from Havana, Cuba, founded in 1999.  The group was first called ""Amenaza"", ""threat"" or ""menace"" in Spanish, and appealed to the Cuban youth who were hungry for African-American culture consisting of hip hop and rap.  Orishas delved into a realm of music and that they created a black identity to which some among the younger generations could relate.  The group is based in France where they made a deal with a record company, although they visit Cuba frequently.  In 1999 Fidel Castro threw a party for them and had a meeting with all the musicians.  It was the first time the Cuban government showed support for hip hop music.  The group was and still is popular in Europe (especially France, Spain and Portugal) and Latin America.  Yotuel Romero and Ruzzo Medina, who moved from Havana to Paris as part of an international studies program, joined Roldán González and Flaco-Pro to form the band in 1999.  Their work is influenced by the hip hop movement as well as Cuban and other Latin rhythms.  s of 2009 , they had produced a total of four studio albums and a greatest hits album; their latest album is Cosita Buena (released June 17, 2008).  In 2009 they participated in the concert Paz Sin Fronteras II in Plaza de la Revolución, Havana, Cuba.  Orishas reunited to record new material in 2016.

The Roots: The Roots is an American hip hop group, formed in 1987 by Tariq "Black Thought" Trotter and Ahmir "Questlove" Thompson in Philadelphia, Pennsylvania, United States.  The Roots are known for a jazzy and eclectic approach to hip-hop featuring live musical instruments.  Malik B., Leonard "Hub" Hubbard, and Josh Abrams were added to the band (formerly named "The Square Roots").

Rob Sonic: Robert Smith, better known by his stage name Rob Sonic, is a hip hop artist from The Bronx.  He is a former member of hip hop group Sonic Sum and a current member of hip hop group Hail Mary Mallon.

Southern Gul: "Southern Gul" is a song released in 1999 as a single by R&B/neo soul singer Erykah Badu.  The song features beatboxer and hip hop artist Rahzel, a former member of "The Roots" who also produced the song.  It was included on "Make The Music 2000" the debut album from Rahzel.  The song peaked at No. 24 on the US Hot R&B Singles & Tracks chart.

Supporting paragraphs: Rahzel The Roots
Answer: The Roots