NTS Sessions 1, 4 is the thirteenth studio album by British electronic music duo Autechre. It was released by Warp Records on 26 April 2018. The album was announced on 9 April, and consists of original music comprising Autechre's residency for NTS Radio on 3 April. The album was released digitally as well as 8×CD and 12×LP. Containing exactly eight hours of music, NTS Sessions 1, 4 is the longest Autechre studio album. The album was met with critical acclaim.