Question: Numbers is the second studio album by American hip hop duo MellowHype, the album also contains appearances from various Odd Future members, Odd Future Wolf Gang Kill Them All, normally shortened to Odd Future and abbreviated to OFWGKTA (stylized OFWGK†Δ with an upside down cross), is an American hip hop collective formed in which city, in 2006-07?

Context articles: Odd Future
Radical (mixtape)
Numbers (MellowHype album)
Left Brain
Pyramid Vritra
The OF Tape Vol. 2
Frank Ocean discography
MellowHype
12 Odd Future Songs
119 (album)

Odd Future Wolf Gang Kill Them All, normally shortened to Odd Future and abbreviated to OFWGKTA (stylized OFWGK†Δ with an upside down cross), is an American hip hop collective formed in Los Angeles in 2006-07.
 The collective was originally formed by Tyler, The Creator with Hodgy, Left Brain, Casey Veggies, The Super 3, and Jasper Dolphin.
 Later members include Earl Sweatshirt, Frank Ocean, Domo Genesis, Mike G, and Syd.
 Outside of music, Odd Future had an Adult Swim skit show called "Loiter Squad", a clothing line named Golf Wang, as well as a mobile app called Golf Media which contains exclusive interviews, behind the scenes clips, and cartoons.
 Every year since 2012, Odd Future has held the annual Camp Flog Gnaw in Los Angeles where members of Odd Future, as well as other supporting acts, perform live and host a carnival.
Radical is a mixtape by the alternative hip hop collective, Odd Future.
 It was released on May 7, 2010.
 The mixtape features Odd Future members Tyler, The Creator, Hodgy Beats, Left Brain and Jasper Dolphin, as well as newly introduced members Earl Sweatshirt, Domo Genesis, Mike G and Taco rapping over some of their favorite beats.
Numbers is the second studio album by American hip hop duo MellowHype.
 It was released on October 9, 2012.
 This was their only release under a major label.
 The album also contains appearances from Odd Future members Frank Ocean, Mike G and Earl Sweatshirt.
 The album was briefly the number one rap album on iTunes, before being overtaken by "The Heist" by Macklemore & Ryan Lewis.
Vyron Dalyan Turner (born December 29, 1989), better known by his stage name Left Brain, is an American rapper and record producer from Los Angeles, California.
 He is best known for being a member of the hip hop collective Odd Future, as well as being a member of MellowHype with Hodgy, and MellowHigh with Hodgy and Domo Genesis.
 He is also associated with hip hop production team Sleeptvlk.
 Turner is currently signed to Mind Gone Music and Odd Future Records.
Hal Donell Williams, Jr. (born November 11, 1991), also known by his stage name Pyramid Vritra, is an American rapper and record producer from Los Angeles, California.
 He is currently signed to Stones Throw Records.
 Aside from his solo career, he is a founding member of Los Angeles-based hip hop collective Odd Future, and Atlanta-based hip hop collective Nobody Really Knows.
 Also, he is one half of The Jet Age of Tomorrow with former Odd Future member Matt Martians.
The OF Tape Vol.
 2 is the debut studio album by American hip hop collective Odd Future, released March 20, 2012, on Odd Future Records and RED Distribution.
 It serves as the sequel from their debut mixtape, "The Odd Future Tape" (2008).
 The album features appearances from Odd Future members Hodgy Beats, Tyler, The Creator, Domo Genesis, Frank Ocean, Mike G, The Internet, Taco, Jasper Dolphin, Left Brain and L-Boy, as well as an uncredited appearance from Earl Sweatshirt.
 Production on the album was primarily handled by Left Brain and Tyler, The Creator, with Frank Ocean, Hal Williams and Matt Martians also receiving production credits.
 Lyrically the album ranges from being serious to being satirical, with some tracks offering an overly absurdist take on rap.
American singer Frank Ocean has released two studio albums, one collaboration album, one mixtape, twelve singles and eight music videos. Following the flooding and destruction of his recording studio during Hurricane Katrina in 2005, Ocean moved from his hometown of New Orleans to the Californian city of Los Angeles, where he sought to continue his musical career, eventually landing himself a songwriting contract.
 In 2009, Ocean signed to Def Jam Recordings as a solo artist.
 Ocean also formed a friendship with rapper Tyler, The Creator, leader of the Los Angeles-based hip hop collective Odd Future (OFWGKTA) and subsequently became a member of Odd Future, as well as making three guest appearances on the album "Goblin", including the single "She".
 In February 2011, he released his first major project, his first mixtape "Nostalgia, Ultra", which produced two singles: "Novacane" and "Swim Good".
 "Novacane" became his first single to chart on the US "Billboard" Hot 100, where it peaked at number 82.
 Ocean also made two guest appearances on the Kanye West and Jay Z collaborative album "Watch the Throne", including the single "No Church in the Wild", which peaked at number 72 on the "Billboard" Hot 100.
 Ocean has also written songs for several artists, such as Damienn Jones ("Cinderella" and "Summertime"), Brandy Norwood ("1st & Love" and "Scared of Beautiful"), John Legend ("Quickly"), Beyoncé ("I Miss You"), Bridget Kelly ("Thinking About Forever"), and Justin Bieber ("Bigger").
MellowHype is an American hip hop duo from Los Angeles, California, that consisted of rapper-producer Hodgy (Gerard Long) and producer-rapper Left Brain (Vyron Turner).
 Both are members of hip hop collective Odd Future.
 They have released two studio albums which both charted on the Billboard 200 albums chart and four mixtapes.
12 Odd Future Songs is a compilation album by hip hop collective Odd Future; it was released exclusively through iTunes on October 3, 2011.
 The album is made up of 10 songs previously released by members of Odd Future, and 3 new songs; The Internet's "They Say" (later featured on "Purple Naked Ladies"), "Forest Green" by Mike G (later featured on "The OF Tape Vol.
 2") and MellowHype's "67", a song exclusive to the compilation.
 Although it is titled "12 Odd Future Songs", there are 13 tracks on the compilation.
119 is the fourth studio album by American hardcore punk band Trash Talk, released on October 9, 2012 via Trash Talk Collective along with Odd Future Records and RED Distribution.
 It is the first album by the band to be released on Odd Future Records, after Trash Talk signed with Odd Future's label on May 30, 2012.
 It is also the first studio album to be released on the label that is not performed by a member of Odd Future.
 A music video for the first official single, "F.E.B.N.", was posted onto YouTube on August 30, 2012.