EARTH DAY CLEANUP starts with registration at 8 a.m. at the Port of Burlington.

MUSIC THEATER students from the University of Iowa present a free stage revue featuring a mashup of all the best numbers from the Golden Age to today’s hit shows, at 7 p.m. at The Capitol, 211 N Third St. This event is free and open to the public.

SOUNDS OF THE PAST is 10 a.m. at Des Moines County Heritage Center Museum. This month: Music from the Titanic and other disaster-related music is featured. This event is free and open to the public.