John Lewis went on to co-found the Modern Jazz Quartet, who incorporated classical forms, such as the fugue, in their music. Tanner, Gerow, and Megill note that the Quartet "played classical forms quite precisely. For example, the fugues they played were truly baroque in form except that the exposition parts were improvised." While third stream music would combine classical elements with jazz, the Modern Jazz Quartet used these forms "just to play good, swinging, subtle jazz" and in pursuit of "the joy of collective improvisation and counterpoint."