Altoist Sonny Simmons' debut as a leader is a typically stimulating and dense ESP blowout. Performing in a quintet with trumpeter Barbara Donald, the up-and-coming pianist John Hicks, bassist Teddy Smith and drummer Marvin Pattillo, Simmons stretches out on four colorful and mostly free-form originals. The intense set (which has been reissued on CD) still sounds quite advanced over three decades later.