Matthias Lasch, known professionally as Mat Sinner, is a German bassist, singer and record producer from Stuttgart.
Sinner has been involved in numerous bands and projects throughout his musical career. His main bands have been Sinner since 1982 and Primal Fear since 1997; he formed the latter band with former Gamma Ray singer Ralf Scheepers. He also formed the band Voodoo Circle with guitarist Alex Beyrodt, in 2008.
Sinner has also been working as a record producer for Kiske/Somerville, Bobby Kimball/Jimi Jamison, and the first Scheepers solo album. Sinner is also the musical director of the successful Rock Meets Classic tour in Europe, where legendary rock singers team up with the RMC Symphony Orchestra and the Mat Sinner Band every year with a setlist of classic rock songs.
In 2013, Sinner also joined the band Silent Force.
In 2014, it was announced that a new project called Level 10, featuring Sinner with Symphony X vocalist Russell Allen and other members of Primal Fear. In January 2015 Chapter One was released.
In 2017, Mat Sinner released the album Tequila Suicide with his band Sinner with a Top 50 chart entry in Germany.