Sinister formed in 1988 in the Netherlands. A classic-sounding Dutch death metal band, Sinister are helmed by drummer-turned-vocalist Aad Kloosterwaard. Although the band has had a revolving line up, Sinister have released a whopping twelve albums. To follow their first Maryland Deathfest appearance in 2016, they will be performing in their home country for Netherlands Deathfest 2017.