The 13-hours of videos were hidden on the duo's Bleep store.
Download for free the duo's sounds and rhythms from their tour.
Each of the sessions will be available as a triple vinyl record or digital formats.
NTS Sessions 1-4 will be available in April.
The duo is back on the London-based radio.
Alva Noto and Ryuichi Sakamoto, Objekt, Call Super, DJ Stingray & Mumdance, among other performing artists.