by Andrea Wallick, cellist
and Andy Fein, Luthier at Fein Violins
Why does that cello sound like a seagull? How are the sounds I'm hearing coming out of string instruments? It sounds like percussion and overtones.
If you've ever asked these questions after watching a string performance, the performers were most likely playing their instruments using extended techniques.
Watch this George Crumb piece being performed to get an idea of what extended techniques are:
Ensemble intercontemporain