 Complete the following phrase:  In 1915, the commissioners of South Park Grant Parks predecessor located a temporary wooden bandshell in the Park near Michigan and Congress Avenues. It hosted large events as well as band performances and remained in place for five or six years. In 1931, Cermak suggested free concerts to lift spirits of Chicagoans during the Great Depression. The Depression and the proliferation of new technological innovations such as records, radios and sound films led to a declining demand for live music and a shrinking job market for musicians. That year, as buildings were being built for the 1933 