Award-winning]] lead guitarist and vocalist of Swedish hard rock band Mustasch as well as the presenter at the Swedish TV channel TV7. He was also the singer of Swedish rock band B-Thong with which he released one album, From Strength to Strength in 1997, shortly before the band's breakup. In 2007 his work with Klipptoppen also earned him an award as the best "Alternative presenter of the year". Gyllenhammar was also one of several guest artists on the double disc soundtrack for the Swedish drama series Upp Till Kamp. Currently Gyllenhammar is endorsed by Schecter guitars which he tunes to Drop C tuning and Blackstar Amplification.