ALAN SONDHEIM, RITUAL-ALL-7-70. Alan Sondheim was the young, exuberant leader of a pack of improvisers in their communal loft in Providence, Rhode Island. Undaunted by attempts to categorize electronic music as the province of academic tinkerers, a cold, unfriendly realm, with its own authorities, and audiences and mystique, they plunged fearlessly, joyously and unselfconsciously into the medium, discovering new way to express their ideas. Their ESP cds, ESP 1048, RITUAL all 7-70 and ESP 1082, T'OTHER LITTLE TUNE, merge free improvisation and electronic instrumentation.