Make Music Boston is a free music festival like no other! On June 21, 2024 - the longest day of the year - Boston comes alive with hundreds of free outdoor music performances and events for all ages and genres of music! Make Music Boston is powered locally by Boston Music Project, a 501(c)(3) non-profit providing over 2,000 youth with weekly music education at 22 Boston schools with a team of over 50 teaching artists.