ESP-Disk is a New York-based record company and label founded in 1964 by lawyer Bernard Stollman. Though it originally existed to release Esperanto-based music, starting with its second release (Albert Ayler's Spiritual Unity), ESP became the most important exponent of what is commonly referred to as free jazz. ESP also released recordings by uncommercial underground rock acts including the Fugs, The Godz and Pearls Before Swine. Though it suspended releasing records in the 1970s, several new releases by iconic and cutting edge artists have been released by the label, and it still exists with nearly its entire catalog available.