Sign Libra has been a regular guest, first appearing on 22 March 2018 and most recently on 30 August 2024. Sign Libra has been played on NTS over 30 times, featured on 35 episodes and was first played on 16 February 2016.

Sign Libra is a music project conceived by producer and artist Agata Melnikova. It focuses on the exploration of the nature and its auspicious influence on human's imagination and emotional balance.