As a conductor Rasmus has several groups, with
Zero8 being the most renowned and awarded. Zero8 has competed in and won classical competitions, such as The European Grand Prix, and sung as guest artists in several places around the world. Since 2016 he is also the director of the mixed chamber choir A Scalpella in Stockholm, since 2019 the mixed barbershop chorus Northern Stars and co-director of the female barbershop choir Pearls of the Sound, from Helsingborg. Rasmus has also directed the Taipei Male Choir during two projects, in 2019 and 2022.