Playlits of all the songs found that came with a 1970's Sopic machine, as shown off in this video here:
youtube.com/watch?v=nJq30FR2GN8
A huge thanks to Zoe Pentaleri for transcribing the titles so I could search them.
I do not speak Japanese very well and some of these tracks may be wrong.
I could not find the following track because there are multiple songs with the same name:
D-132-B. ふるさと