Peter Wolf time windows
 TIME WINDOWS, composed by Norbert Zehm, with multimedia art by Roland Schrettl, is a libretto by Peter which premiered live at the ORF Kulturhaus Landesstudio, Innsbruck, in March 2007.
It was broadcast as part of their MUSIC IN SPACE - IMAGES IN TIME concert.

In August 2008 TIME WINDOWS and IRONMASTERS premiered in the UK as Norbert and Roland toured LIGHT - CIRCLES & TIME, with concerts at Lauderdale House and Southport Arts Centre.