El Producto is the debut extended play (EP) by Australian electronic music group The Avalanches.
 It was released on 8 December 1997 via Wondergram Records and distributed by Shock Records.
 "El Producto" was the second release by the group and included their debut single, "Rock City", which had appeared on Trifekta Records two months prior.
 "Rock City" was the only single released from the EP, the band had "started performing widely and attracted a long term recording deal".
 Based on the EP's success, Steve Pavlovic, head of Wondergram Records, signed the group to his new Modular Recordings label in May 1998.
 They also signed with Rex Records for the exclusive United Kingdom four-track EP "Undersea Community", which appeared in March 1999.
 They released their full-length debut album, "Since I Left You", on Modular in November 2000.
Adam Noah Levine (born March 18, 1979) is an American singer, songwriter, multi-instrumentalist, actor, and record producer.
 He is the lead singer for the pop rock band Maroon 5.
What Dreams Are Made Of is the debut album by production duo Rock City.
 It was released on October 9, 2015.
 The album includes "Locked Away", the single performed with Adam Levine that peaked at number one on the "Billboard" Mainstream Top 40 chart.
Adolf "Dado" Topić (born 4 September 1949, Siverić) is a rock musician from Croatia and the former Yugoslavia.
 He was the lead singer and founder of Time, a 1970s progressive rock band.
 From 1970 to late 1971, he was also the lead singer of the popular prog-rock band Korni Grupa (also known as The Kornelyans).
 He is a rock musician from Croatia and the former Yugoslavia.
 He was the lead singer and founder of Time, a 1970s progressive rock band.
 From 1970 to late 1971, he was also the lead singer of the popular prog-rock band Korni Grupa (also known as The Kornelyans).
 He is a male vocalist who sang the entry from Croatia in the Eurovision Song Contest 2007, together with the band Dragonfly.
Not Available is an album by The Residents.
 It was originally recorded as a follow-up to 1974's "Meet the Residents".
 However, following the "Theory of Obscurity", it was immediately locked away in a bank vault with no plans to issue it until the members of the band had completely forgotten about its existence.
 It did surface in 1978 due to continued delays on the "Eskimo" album and the Cryptic Corporation's desire to have some sort of Residents release, as the re-release of the single "Satisfaction" the same year had garnered some attention in Europe.
 The album itself is a dense concept album featuring a more musical and cohesive approach than that found on most Residents albums from the 1970s.
Rock City is an American musical duo formed in 2003, from Saint Thomas, U.S. Virgin Islands.
 The duo consists of brothers Theron and Timothy Thomas, who use the stage names Uptown AP and A.I. respectively.
 They are also a songwriting and record production team.
 The duo have also released music under the names R. City and Planet VI.
 Their debut album, "What Dreams Are Made Of", was released in 2015.
 They are known for the single "Locked Away" featuring Adam Levine.
The Cocked, Locked, Ready to Rock Tour was a concert tour by American hard rock band Aerosmith that took place during mid-2010.
 In late spring and early summer of 2010, the band performed in South America and Europe, respectively, marking their first concerts on those continents since 2007.
 During the second half of summer, the band toured North America.
 Prior to the tour, the band confirmed that the lead singer would be Steven Tyler, after rumors of his departure in late 2009.
Love Agenda is the second album by Band of Susans, released on April 17, 1989 by Blast First and Restless Records.
 Page Hamilton, later frontman for Helmet, played guitar on the album and sang the lead vocals on the track "It's Locked Away".
 Also notable was bassist Susan Stenger singing her first lead vocals on the songs "The Pursuit of Happiness", "Birthmark" and "Hard Light".
 Robert Poss was an admirer of the Rolling Stones and CD versions of "Love Agenda" features a cover of "Child of the Moon".
"Locked Away" is a song by Virgin Islands production duo Rock City featuring American singer Adam Levine, the lead singer of pop rock band Maroon 5.
 The song was released on June 29, 2015, by Kemosabe Records and RCA Records.
 The song peaked at number six on the "Billboard" Hot 100, making it the duo's first top ten hit and Levine's first single that he did not co-write.
"Locked Away" is a 2015 song by Rock City featuring Adam Levine.

Question: Rock City's single  "Locked Away" was performed with the lead singer of what band?
Answer: Maroon 5