Beyond the Boundary of Time documents the last live performance of the legendary Revolutionary Ensemble before Leroy Jenkins's death in 2007. This recording was made of a performance on May 25, 2005 in Warsaw, Poland. In the 1970s, the Revolutionary Ensemble introduced New York to decided musical advances, many pioneered by Chicago's A.A.C.M. musicians. Ex-Chicagoan Leroy Jenkins, who played violin, of all unheard-of modern jazz instruments, had formed his concept from classical, swing, blues, and modern elements and had been one of the radicals who discovered new concepts of sound, space, and musical relationships in the late 1960s. Jerome Cooper had been a somewhat later Chicago explorer, while Sirone's freedom of motion had grown out of work with the most visionary New Yorkers. Extensive rehearsal led this cooperative trio to a shared, free sense of dynamics, momentum, and form, and a wholly unique sound: their instrumental recombinations yielded a surprising variety of textures and colors. Most of all, these highly sophisticated personalities played together to create an ensemble music even larger than the sum of its parts.