Question: What job do the writer of Lace Up and Waka Flocka Flame have in common?

Context paragraphs:
Ferrari Boyz: Ferrari Boyz is a collaborative studio album by American rappers Gucci Mane and Waka Flocka Flame.  Originally scheduled for a June 21, 2011, release, it was delayed and later released on August 9.  It features Rocko, 2 Chainz, 1017 Brick Squad labelmates Wooh da Kid, and Frenchie, and also Brick Squad Monopoly members Slim Dunkin (now deceased), Ice Burgundy, and YG Hootie.  The album was mostly produced by label producer Southside, with additional production by 808 Mafia, Drumma Boy, Fatboi, Shawty Redd, and Schife.  According to Waka Flocka, the album was completed in "1–2 weeks."

Triple F Life: Friends, Fans &amp; Family: Triple F Life: Friends, Fans & Family is the second studio album by American rapper Waka Flocka Flame.  It was released on June 12, 2012, by 1017 Brick Squad, Brick Squad Monopoly, Asylum Records and Warner Bros.  Records.  The album features guest appearances from Drake, Nicki Minaj, B.o.B, Trey Songz, Ludacris, Travis Porter and Meek Mill, while the production was handled by Waka Flocka's longtime collaborator Lex Luger, Troy Taylor and Southside, among others.

Beast (Mia Martina song): "Beast" is a song recorded by Canadian singer Mia Martina for her self-titled second album (2014).  It was released on April 7, 2015, by CP Records and Universal Music Group, as the fifth single from the album.  The song features a guest appearance from American rapper Waka Flocka Flame.  Martina and Waka Flocka wrote the track with Breyan Isaac, who also produced it.

Lace Up: Lace Up is the debut studio album by American rapper Machine Gun Kelly.  It was released on October 9, 2012, by Bad Boy Records and Interscope Records.  Puff Daddy, who is serving as the executive producer on the album, enlisted the guest appearances from Cassie, DMX, Planet VI and Avenged Sevenfold; as well as the production that was provided by Alex da Kid, JP Did This 1 and J.R. Rotem, among others.  The album was supported by four singles: "Wild Boy" featuring Waka Flocka Flame, "Invincible" featuring Ester Dean, and "Hold On (Shut Up)" featuring Young Jeezy, alongside a promotional single, "Stereo" featuring Alex Fitts.

Waka Flocka Flame: Juaquin James Malphurs (born May 31, 1986), better known as Waka Flocka Flame or simply Waka Flocka, is an American rapper.  Signing to 1017 Brick Squad and Warner Bros.  Records in 2009, he became a mainstream artist with the release of his singles "O Let's Do It", "Hard in da Paint", and "No Hands", with the latter peaking at number 13 on the US "Billboard" Hot 100.  His debut studio album "Flockaveli" was released in 2010.  His second studio album "" was released in 2012 and was preceded by the lead single "Round of Applause".

Trap God: Trap God is a mixtape by American rapper Gucci Mane, released on October 17, 2012.  The mixtape was announced on July 31, 2012, with no release date notified.  However, on August 8, Gucci announced that October 17, 2012, would be the date of the release.  The mixtape features major guest appearances from Rick Ross, Waka Flocka Flame, Meek Mill, Future, T-Pain, Kevin McCall, Trae Tha Truth, Kirko Bangz, and Birdman, as well as up and coming rapper Young Scooter who is featured on 6 of the tracks.

Rooster in My Rari: Rooster in My Rari is a song by American rapper Waka Flocka Flame from his second studio album, (2012).  The song was written by Waka Flocka Flame and DJ Spinz; the latter also produced the song.  It was released on May 28, 2012 as a promotional single from the album.

Arkatech Beatz: Arkatech Beatz (formerly known as The Infinite Arkatechz , and now and more often referred to, and known as "The Arkatechz" for short), are a Grammy nominated music production team from New York City, now based in Atlanta.  They were affiliated with Loud Records/ Sony Music Entertainment as A&R executives in the late 1990s, and have composed, written, and produced music for gold and multi-platinum selling artists such as Big Pun, Nas, Raekwon, Prodigy of Mobb Deep, Mýa, Waka Flocka Flame, Jadakiss of The Lox, and others.  The Arkatechz have also written and composed music for various movies such as the controversial 1999 drama film, "Black and White", "All The Women I’ve Loved", and others.  The core team consists of members, Mike "Trauma" D., and Jugrnaut, and the full music production team includes Singer/Songwriter/Actor, Sean “Black” Baker, and Writer/Director/Filmmaker, Milton “Cain Marko” Dewar.

Wild Boy (song): "Wild Boy" is a song by American rapper MGK.  The song, released September 27, 2011, serves as the lead single from his debut EP "Half Naked & Almost Famous" (2012).  The single features American rapper Waka Flocka Flame and was produced by GB Hitz and Southside.  The song was initially included on his third mixtape "Rage Pack", and later included on his major-label debut studio album "Lace Up".

Kebo Gotti: Gotti appeared on the Waka Flocka Flame single ,"Grove St. Party", the fourth and final single from Flame's debut album, "Flockaveli" (2010).  The music video for "Grove St. Party" includes Kebo, Gucci Mane and YC.  On February 27, 2011, "Grove St. Party" entered at #38 on the U.S. "Billboard" R&B/Hip-Hop Tracks chart, peaking at #12.  It also climbed the "Billboard" Rap Songs charts, reaching #10, and on the U.S. "Billboard" Hot 100 at #74.

Supporting paragraphs: Lace Up Waka Flocka Flame
Answer: American rapper