Free and open to all. Enjoy live hip-hop and R&B music curated by The Cambridge Hip-Hop Collective and free safety checks with a bicycle technician from Casa Bikes. Safety checks will take place on a first come, first served basis, regardless of advance registration. This is a popular event - we recommend arriving early to get a spot in line! Registration is recommended - you’ll be the first to learn of event details or if the location or date changes due to inclement weather.