Son.sine has been played on NTS shows including Dark & Lovely Global Roots w/ Thristian, with Upekah first played on 6 October 2013.

New Zealand minimal techno producer, also known to record as Epsilon Blue (deep house/trance) and rotor+ (ambient electronica). son.sine's only solo release thus far is the Upekah 12", which was released on Simon Flower's label Nurture Recordings in 2000. The track went on to feature on the Swayzak compilation Groovetechnology v1.3. son.sine has also remixed tracks by various New Zealand groups including Salmonella Dub, Pitch Black, and The Black Seeds.