The limited edition CD that documents the north avenue: NOISE + vibrating.AIR installation and performance from the 2010 Megapolis Audio Art Festival will be available in the next couple weeks. The package will be limited to just 30 signed and numbered copies via the store section of this site. north avenue: NOISE + vibrating.AIR is a handmade digipak design and includes a piezo disc attached to the back of the sleeve. The cd runs 61 minutes.