Mentally Ill has been played over 10 times on NTS, first on 14 March 2018. Mentally Ill's music has been featured on 13 episodes.

Mentally Ill were one of the Chicago-area's first and most mysterious punk acts. Formed by 4 teenagers in Chicago's north shore suburbs, the band released a 7" EP called "Gacy's Place" in 1979, named after notorious Chicago-area serial killer John Wayne Gacy. Only 300 copies were pressed. College aspirations seemed to put the band to an early end, and outside of a few house parties, the original group never played live. Over the years, due to its crude sound and outrageous lyrics, "Gacy's Place" developed a cult following, finding such famous fans as Steve Albini and Jello Biafra.