R. City & Adam Levine

Rock City, also known as R. City and Planet VI, is an American musical duo Saint Thomas, U.S. Virgin Islands. The duo, composed of brothers Theron and Timothy Thomas, who use the stage names, A.I. and Uptown AP respectively, are also a songwriting and record production team. The Thomas brothers are perhaps best known for writing and producing hit singles for several prominent artists, including Sean Kingston ("Take You There"), Miley Cyrus ("We Can't Stop"), Nicki Minaj ("Only") and Rihanna ("Pour It Up"), among others.
The duo has also contributed to numerous Grammy-nominated albums including Rihanna's Unapologetic (which won Best Urban Contemporary Album), Jennifer Hudson's self-titled album (which won Best R&B Album), and Ariana Grande's My Everything (which was nominated for Best Pop Vocal Album).
Rock City also releases original music, having released several mixtapes since 2008. The group had previously been signed to Geffen Records and KonLive, where they released a series of mixtapes with the primary title, PTFAO (Put the F*ckin' Album Out) - a reference to the fact that their debut album Wake the Neighbors, had not been given a release date. In 2011, the duo was released from their contract with KonLive, and founded Rebelution Records, on which they intended to release their debut album. A new project, #WhatDreamsAreMadeOf, is due to be released in 2015, after being signed to Kemosabe Records/RCA Records by Dr. Luke.

Adam Noah Levine (born March 18, 1979) is an American singer, songwriter, multi-instrumentalist and actor. He is the lead vocalist for the Los Angeles pop rock band Maroon 5.
Born and raised in Los Angeles, California, Levine began his musical career in 1994, when he co-founded the alternative rock band Kara's Flowers, of which he was the lead vocalist and guitarist. The band split up after their only album, The Fourth World (released in 1997), which did not gain popularity. In 2001, the group was reformed – with guitarist James Valentine joining the line-up – and began a new, musical chapter, changing their name to Maroon 5. In 2002, the band released their first album, Songs About Jane, which went multi-platinum in the US. Since then, they have released four more albums, It Won't Be Soon Before Long (2007), Hands All Over (2010), Overexposed (2012) and V (2014). As part of Maroon 5, Levine has received three Grammy Awards, two Billboard Music Awards, two American Music Awards, an MTV Video Music Award and a World Music Award.
Since 2011, Levine has served as a coach on NBC's reality talent show The Voice. The winners of the first and fifth seasons, Javier Colon and Tessanne Chin, were on his team. In 2012, he made his acting debut as a recurring character in the horror television show American Horror Story: Asylum for the series' second season. He also starred in the film Begin Again.
As an entrepreneur, Levine launched his own eponymous fragrance line in 2013. The same year, he collaborated with Kmart and ShopYourWay.com to develop his menswear collection. He also owns a record label, 222 Records. In 2013, The Hollywood Reporter reported that "sources familiar with his many business dealings" estimated Levine would earn more than $35 million that year.