The orchestra , which performs rather infrequently , was founded in 1988 by Schlippenbach .
The orchestra , which performs rather infrequently , was has commissioned works by Carla Bley , Manfred Schoof , and Willem Breuker , among others .
The orchestra , which performs rather infrequently , was founded in 1988 by Schlippenbach and has commissioned works by Carla Bley , Manfred Schoof , and Willem Breuker , among others .