What's your favorite summer music memory? Grant Park Music Festival, Ravinia, and summer street festivals are now in full swing and summer begins (officially) this week. We'll be sharing your stories of summer all day today, Tuesday, June 18 on air. Chime in below!

Tonight at 10 on Critical Thinking: Andrew shares a new conversation with Chicago Symphony Orchestra music director Riccardo Muti recorded just yesterday at Orchestra Hall. Maestro Muti discusses his current and future relationship with the CSO as well as the season closing program this week featuring the CSO Chorus in works of Verdi, Mozart and Vivaldi.

Bernie Sahlins, co-founder and longtime head of The Second City, has died at 90. The Chicago native and 1943 U of C graduate died at his Gold Coast home after a brief illness. Many Chicagoans first heard The Second City on the Midnight Special, and we express our condolences to Bernie's wife, theatre producer and visionary Jane Nicoll Sahlins, and his brother, noted U of C anthropologist Marshall Sahlins. Sahlins once said that “art is not a matter of life and death, it's much more important than that.”City co-founder Bernard Sahlins dies at 90 - Chicago Sun-Timeswww.suntimes.comThe Chicago native created an empire, helped shape his hometown as a hub of comedy and nurtured comic greats including Alan Arkin, John Belushi and Bill Murray.