"Auflösen" (Break up) is a song by Die Toten Hosen, namely a duet between Campino and Birgit Minichmayr.
The song describes, how shallow a physical relationship between a man and a woman is, as it doesn't really make a difference between them, if they would break up.
The song also features Raphael Zweifel on cello and Hans Steingen on piano, although in the video it is played by Esther Kim, who has supported Die Toten Hosen in concerts and also played the piano, when the band and Minichmayr performed the song in the Echo awards ceremony of 2009.
Most of the video shows Campino and Minichmayr together, singing or having sex, hinting to a physical relationship between them.
Also intercut are shots of the band playing and, during the break, also Esther Kim on piano and Raphael Zweifel on cello.