Formed just two weeks ago by local composer C.P. First and two other Northwestern-prepped musicians, the Chicago 20th Century Music Ensemble is the latest addition to the city’s burgeoning new-music scene. While other groups make a point of showcasing area composers, this one, according to cofounder Todd Sullivan, intends to cover the “broadest possible spectrum” of modern musical taste and will emphasize unusual instrumentation. This (free) concert stars multifaceted Greek-born mandolinist Dimitris Marinos, who’ll play mostly pieces written for him. The composers represented include locals Gene Coleman, Pieter Snapper (whose piece Sburator features a computer-processed “virtual mandolin orchestra”), Robert Lombardo, and First. Among the supporting players are Coleman (bass clarinet), Jeffrey Kust (guitar), and Edward Paremba (marimba). Tuesday, 5:30 PM, auditorium, Harold Washington Library Center, 400 S. State; 747-4050.
