Complex sentence: They have performed at the Midwest International Band and Orchestra Clinic in Chicago twice (the only Kentucky band to ever do so) and in March 2006 the Wind Symphony became the first Kentucky concert band to perform in Carnegie Hall in New York City.
Split into simpler sentences: They have performed at the Midwest International Band and Orchestra Clinic in Chicago twice (the only Kentucky band to ever do so). In March of 2006 the Wind Symphony became the first Kentucky concert band to perform in Carnegie Hall in New York City.