A guy I know @ Radio Sagarmatha told me that Prakash Sayami has a collection of rare Narayan Gopal songs/recordings. But he has not brought it out in public. I got hold of a version of the song - eiuta manchay ko maya lay sung in a completely different music composition than the one on Music Nepal Tape. Apparently (not sure how true) music composers working on Chandani Shah songs had to come up with 2/3 different compositions and had to present her with them. Whatever she decided became the "official" version. This other recording of eiuta manchayko was apparently rejected.