Marcel O, better known as gramma, is a classically trained musician, whose early years were shaped by formal music education. However, it wasn’t until 2022 that he stepped behind the decks as one half of a DJ duo The BPM Police. In 2023, gramma embarked on a solo journey, quickly establishing himself as a versatile and genre-defying DJ. In 2024, gramma co-founded Slayvenija, a vogue and ballroom club night that celebrates queer creativity and the power of the dance floor. His genre-fluid approach transcends boundaries, with sets weaving through vogue, ballroom, Jersey club, baile funk, and occasional forays into Italo disco and EBM. The near future promises another evolution for gramma, as he dives into productions under the alias Cadaver Exquisito (cd-ex).