Gustaf Hielm is a bass player (and a sometimes/somewhat guitar, violin and theremin player), songwriter and birdwatcher from Stockholm, Sweden.
Present or former bands and session work includes among others: Pain of Salvation, Meshuggah, Mats/Morgan Band, Devin Townsend, Trey Gunn, the Zappa alumni: Napoleon Murphy Brock, Denny Walley, Ike Willis and Bobby Martin, Dan Reed, Dark Funeral, Tiamat, Anneke van Giersbergen, Badge, Tina Ahlin, Stefan Sundström, Tomas DiLeva, Wille Crafoord, Charta 77, Bas & Bas (duo with bass and stick player Bengan Jonasson), Enter The Hunt, Katzen Kapell, Non-Human Level, Coste Apetrea & Lars Hollmer of Samla Mammas Manna, Mattias "IA" Eklundh, Tatsuya Yoshida, Ardis the Spoonman, Svante Thuresson etc. and of course Thore Skogman!