Errata is a contemporary jazz trio that moves between highly formalized composition and intuitive improvisation. Formed in 2017 in Chicago by guitarist, cellist, and composer Ishmael Ali and rounded out by close friends Eli Namay and Bill Harris, the trio combines elements of jazz, 20th-century classical music, and improvised music with rhythmic language influenced by Steve Lehman and Henry Threadgill. Their music exists between discernibility and noise, regularity and irregularity. A listening experience for all styles of jazz fans.