Philippe Kayser, aka Don Philippe, was active as a professional drummer in the 1980s and later as a pianist and guitarist. Since the 1990s, he has been working as a producer and composer in his own studio. He is a co-founder of the hip-hop group Freundeskreis, which has played a significant role in shaping German hip-hop culture. Since 2015, he has released more than ten solo albums in the hip-hop instrumental genre, gaining worldwide presence on Spotify and various independent labels.