'Weisse Trommel' - On 2009 - welded metal, 1 photoelectric cell, magnets, tambourine - Height 139 cm
'Schwarzflügler' - On 2009 - welded metal, 1 photoelectric cell, magnets, helixes - Height 139 cm
'Blue Spiral' - 2006 - welded metal, 1 microphone, light-emitting diodes - Height 61 cm