"Du hast den schönsten Arsch der Welt" (translated as "You have the sweetest ass in the world") is the title of a German language song by the German dance music composer, producer, and DJ Alex C. (full name Alex Christensen). The song "Du hast den schönsten Arsch der Welt" was recorded in co-operation with and featuring Y-ass. It sampled from The Soundlovers' song "Run Away". Also in 2007, Basshunter made a remix of the song as "Du Hast Den Schönsten Arsch Der Welt (Bass My Ass Remix)". The song itself is a cover version of The Soundlovers 1996's song "Run-a-way".
This song marked an international breakthrough for Alex Christensen. Because the song got high ratings in several foreign dance charts, it was re-released in several other languages including in English as "Sweetest Ass in the World" as well as in French, Spanish, Dutch and Czech languages.
"Du hast den schönsten Arsch der Welt" is thus far the only number-one hit for Alex C as a solo act in the German Singles Chart, although he had a number-one hit in 1992 with U 96 - "Das Boot". The single "Du hast den schönsten Arsch der Welt" stayed for one week at the top for the week 16–23 November 2007. The song also topped the Austrian Top 40 for 2 weeks on 16–30 November 2007. Its English version "Sweetest Ass in the World" reached #57 in the UK Singles Chart.
Alex C. and Y-ass took part with the song in the 2008 Sopot Hit Festival music competition and were the overall runners-up with 29.7% of the votes in the category International Hit Summer 2008 losing to the eventual winner "Hey Hi Hello" by Shaun Baker feat. MaLoY (55.2%)
The song was nominated for "Best Song of the Year" at the VIVA Comet Awards in 2008.