Kalle Trapp

Album credits

• 
  Battalions of Fear

  Blind Guardian · 1988

  Production

  mixer (tracks 1, 2, 4–7), producer (tracks 1, 2, 4–7), recording engineer (tracks 1, 2, 4–7)

• 
  Follow the Blind

  Blind Guardian · 1989

  Production

  producer

• 
  Tales From the Twilight World

  Blind Guardian · 1990

  Performance

  background vocals

  Production

  mixer, producer, recording engineer

• 
  Somewhere Far Beyond

  Blind Guardian · 1992

  Production

  mixer, producer, recording engineer