(advanced idea mechanics) A non-formalized collaborative effort among artists, operating as a subsidiary of Telepathy Records.

Amateur group reflecting the broad diversity of racial backgrounds, ages, religions, and political philosophies that comprise the city of Cambridge.

Offering music for international folk dancing and weddings.

Cambridge-based ensemble performing a cappella and accompanied works from all musical periods.

Presenting performances of solo, chamber, choral, and orchestral music from the Middle Ages through the early 19th century. Site includes concert schedule, group history, awards, and early music links.

Adult amateur musicians dedicated to performing good music at free concerts in and around Cambridge. Site includes concert schedule and directions.

Recording studio founded by the late Mark Sandman, frontman of the band Morphine. Includes CDs, MP3 downloads, and links to sites of its artist roster, as well as tour dates.

Vocal trio performing medieval and early Renaissance music. Site includes concert information, individual bios, and sound samples.

Performing original works for winds since 1948; site includes concert and rehearsal schedule.

Small choral ensemble formed in 1959. Site includes performance schedule, ticket purchase, list of musicians, and e-mail list.

Non-profit community organization providing music instruction to adults and children. Extensive site includes course listings, program descriptions, news, and directions and map.

Chamber ensemble performing contemporary music.

The house big band at Ryles Jazz Club, directed by Frank Vardaros. Site includes concert schedule.

Offering private guitar lessons in jazz, blues, rock, folk and funk for beginners through professionals.

A recording studio with digital and analog equipment offering a full range of services. Features lists of equipment, rates and photos of facilities.

Cambridge-based ska band with influences of ska, pop, rock, funk, and swing.

A small choral ensemble performing works primarily from the Renaissance and the 20th century. Site includes performance schedules and audition information.

Concerts from around the world, presented at Sanders Theater, the Somerville Theater, and other venues. [Requires frames]