Patrick Losenský (born 3 April 1982), known professionally as Fler, is a German rapper and the CEO of Maskulin Music Group.

Fler had five feature parts on Bushido's first studio album, Vom Bordstein bis zur Skyline, released July 2003.

On 27 September 2007 at 18:00, after co-hosting MTV TRL: Urban show, Fler was attacked by three unknown men armed with knives.

After the Aggro Berlin recording label closed, he contacted Bushido and they officially showed their reconciliation with a photo shoot and interview for Bravo HipHop Special.

[7][8] On 11 February 2011, the song "Nie an mich geglaubt" from Fler's sixth album, Airmax Muzik II, was leaked on the Internet as digital single with two remixes, an instrumental version and video shot in New York City.

[10] The premium edition featured two bonus songs and a 30-minute DVD about the rapper's childhood, with private photos and home movies, and interviews with his stepfather, Shizoe, Silla and others.

Music videos were made for the songs "Nummer 1", "Hinter blauen Augen", "La Vida Loca" and "Du bist es wert".

[12] Fler has cited several American rappers as his influences including Mobb Deep, 50 Cent, Lunatic and Juelz Santana.

In 2004, Eko Fresh released the diss track "Die Abrechnung" (English: The Reckoning), that mainly attacks Kool Savas, but also referred to various German rappers, including Bushido, Sido and Fler.

[13] In December 2004, Fler responded with "Hollywoodtürke" (English: Hollywood Turk), which mocked Eko Fresh as a "wanna be gangster" and also references the label Royal Bunker and rapper Bushido.

)[14] and Eko Fresh with "FLERräter" (a wordplay on verräter, meaning "traitor"), a track from his mixtape Fick noch immer deine Story, that also features Bushido.

[15] The feud continued as Fler and B-Tight dissed Eko Fresh on the track "Du Opfer" (English: You victim).

Following that, Eko Fresh tweeted with irony to his fans, to buy Fler's album and called the song "whack".

[18] On 20 March, Kollegah released "Fanpost", where he insulted Fler calling him a "fat potato" and mocked him claiming that he was penetrated with a carrot.