Dave Grunewald (born 9 October 1986) is a Germanmetalcore musician, television personality, and influencer. He became known through his participation in the Sat.1 show All Together Now and through his work as an influencer on Instagram. Between 2011 and 2019, he was the unclean vocalist for the metalcore band Annisokay and currently makes music under his pseudonym xHIGHTOWERx.[1]
At the end of 2019, Grunewald parted ways with Annisokay to pursue his solo career. Since 2019, he has been a solo artist under the name xHIGHTOWERx[1][3] and created his own experimental mix consisting of metal singing and hip hop, along with trap beats. He has released three singles to date: "Outcast", "G.O.A.T", and "Rebirth".
With the band Machete Dance Club, Grunewald performed the joint song "Cheap Motel" in October 2021 at WDR's Rockpalast.[4] In 2022, he was one of 100 judges in the first season of the music show All Together Now[1] on the television channel Sat.1.
Since the beginning of 2022, Grunewald has had a podcast with pro wrestler Axel Tischer called Here We Go,[5] in which stories about traveling as an artist were told on a bi-weekly basis. He also composed Tischer's current entry music[6] in collaboration with Max Kusari. Grunewald also worked as a voice actor for the role of "Tomohiro Tsuboi" for the anime Gakuen Basara: Samurai High School in 2018. Grunewald works as an influencer on social media, primarily on Instagram; he is also a professional fitness trainer, personal trainer, and nutritionist. He lives a straight edge lifestyle and lives in Leipzig.