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Magma Music Agency is an award-winning international music agency based in Amsterdam.

We are musicians at heart who create music to strengthen visual ideas, films and art projects
We work with creative agencies, directors and brands to amplify the impact of their vision through the primal force of music and sound.


Michael Bertoldini

Managing Partner and Music Supervisor

Seppl Kretz

Managing Partner and Creative Director

Martijn Van Lent

Head Of Finance

Gyo Kretz

Music Producer and A&R Manager

Andrea Morelli

Music Supervisor & Account director

Jim Albers

Publishing and Partnerships

Marvin Losch

Junior Music Producer



Rapenburg 21H
1011 TT Amsterdam
The Netherlands


Pieter Goedkoopweg 10
2031 EL Haarlem
The Netherlands