Astrid Swan: Poverina (2005, Delphic) -Guitars, banjo, mandobanjo. Jonna Tervomaa: Halo (2004, Universal) -Recording. Feyodor: Aggressive pedestrian (2004, Powertool records) -Production, recording, mixing, various instruments. Joed Out: Weirder Than Looney Tunes (2004, Powertool records) -Production, recording, mixing (2 tracks), mastering, percussion Jonna Tervomaa: Rakkauden haudalla (2003, Single, Universal) -Recording Treeball: The strawberry blonde school of class (2002, Stupido) -Recording, mixing, guitars (2 tracks) The Duplo!: Rainbow (2002, Stupido) -Recording, mixing, backing vocals, wurlitzer