So I took out some of my singles and tried playing one. The first one is a Horie Mitsuko single, it's from 1980 and it's called "Koi no Hana Uranai". The B-side is called "Lilac no hanakotoba". I looked it up, and it seems that both songs come from the anime Hana no ko Lun-Lun, as insert songs. The 6th and 3rd tracks from the LP are on this single.
I tried making the tracks into MP3s (MP3 players being far more portable than record players), but there's something up and the tracks keep stuttering.
So here's the cover I scanned, along with the back which contains lyrics and sheet music!

