Liner notes evolved during the twentieth century as a new genre of music writing, one that served as both a compliment and a complement to the pioneering jazz recordings it set out to describe. Prior to the purchase of a jazz album, liner notes gave consumers a preview of the sounds they would soon hear (and the messages they might receive). As decades passed, some liner notes became as memorable as the albums they graced. When writers as diverse as Ira Gitler, Amiri Baraka, and Stanley Crouch emerged as tastemakers in jazz circles, it was not only for their music criticism, but also for the liner notes they placed on albums by John Coltrane, Billie Holiday, and Wynton Marsalis. This essay considers a host of writers who made liner notes a key factor within jazz culture, and within American discourse more generally.