The Downtown Sound free concert series at 6:30pm in the Pritzker Pavilion, 201 E. Randolph St. in Millennium Park, this week features Joe Pug and Hooray for the Riff Raff. Seating begins at 5:30pm. Free.
El Circo Nacional de Puerto Rico and Theater Oobleck perform SOS: A Summer Clown Cruise Sunday and tonight in the Humboldt Park Boathouse, 1440 N. Sacramento Ave., at 7pm. Bring a blanket or chair and watch juggling, fire work, clowning and acrobatics performed out on the lagoon, accompanied by a nine-piece band and bilingual narration. Free.