Chicago Sinfonietta, the nation’s most diverse orchestra, kicks off its 30th anniversary with Trademark showcasing unusual instruments, collaborations, and classical reinterpretations – a trademark of the orchestra’s programming for three decades. This unexpected and adventurous concert experience will include guest performances from the 16-piece Northern Illinois University Steelband led by Liam Teague and Chicago’s own Cerqua Rivera Dance Theatre plus two World Premieres as part of the orchestra’s year-long initiative Project W: Commissions by Women Composers. The Sinfonietta performs Trademark twice: first in the western suburbs at Wentz Concert Hall at North Central College, Naperville, Saturday, September 16 at 8 pm, and then again in its downtown Chicago home venue of Symphony Center, Monday, September 18 at 7:30 pm. Tickets range from $20-$99 for concerts at Symphony Center and $49-$62 for concerts at North Central College with special $10 pricing available for students at both concerts. Tickets can be purchased by calling Chicago Sinfonietta at 312-284-1554 or online at www.chicagosinfonietta.org.