Unterfangen has 3 Ski Aggu concerts.

Ski Aggu is a German rapper from Berlin-Wilmersdorf, who is known for his party-themed songs and his signature ski goggles. He was born on November 3, 1997, as August Jean Diederich. He started releasing music on Soundcloud in 2018, collaborating with Ritter Lean and other underground artists. He also lived in Ireland for a while, where he became a champion of Brazilian Jiu-Jitsu, a martial art that he often references in his online presence and music videos.