Beginning with Symphony No. 7 , Branca began composing for traditional orchestra , although he never abandoned the electric guitar . Branca also played duets for excessively amplified guitars with his wife , Reg Bloor , and conducted his 13th symphony for 100 electric guitars at the base of the World Trade Center in New York City on June 13 , 2001 , less than three months before the center 's destruction in the September 11 attacks . Since that time his 100 guitar piece has been performed in cities all over the U.S. and Europe . In 2008 , he wrote his 14th Symphony , entitled '' The Harmonic Series '' , which is performed by a traditional orchestra . The first movement of this symphony , named '' 2,000,000,000 Light Years From Home '' premiered in St. Louis performed by the St. Louis Symphony Orchestra conducted by David Robertson on November 13 , 2008 . This was the 12th major orchestra to perform Branca 's orchestral work since 1986
September 11 attacks
September 11 attacks
Glenn Branca