When I was 14, playing gigs at school, we knew we were pro because we had real silver gaffa/duct tape to stick the cables to the stage (thanks, Peter!). If you're a real musician, you should probably invest in some 3M Nuclear-Grade Duct Tape, which is for "Use in nuclear power plants to seal end caps on stainless steel pipes, hold labels and signs on stainless steel pipes, and seal HVAC metal ductwork. Meets NRC (Nuclear Regulatory Commission) Guide 1.38." Available from the wonderful McMaster-Carr catalogue for $11.97 a roll.
Posted by Tom Whitwell. 
: 11:40 pm