From Washington Square Park Conservancy:

Enjoy a free chamber music in Washington Square Park, presented by WSPC Community Arts Grantee eGALitarian Brass! eGALitarian Brass is a classical quintet by day and a brass band by night dedicated to performing and commissioning new works by diverse composers and breaking boundaries of chamber music today as a classical quintet.

For updates on timing and weather-based cancelations, see the Washington Square Park Conservancy Instagram.