I wish this track had vocals! Anyhow, this is heavy sample manipulation from the OT. A simple guitar riff and a couple of samples from an old Japanese story book LP and my good the bad and the ugly Japanese edition. The A4 is doing the arp bass and the modular is playing the lead with healthy reverb form both the A4 and the OT.
The modular patch is very simple. It's tri/sine shaped out of the makenoise STO with function controlling the VCA of the ripples. Tides is modulating the shape very slightly. A simple patch but with the reverb just sounds lush to me.