Hello I had these 2 songs on a casette in 1983 and they are likely to be recorded in late 70's. Both are categorized as disco but not in a strict sense I mean they are not exactly like "You should be dancing" by the Bee Gees , they are just pop songs from late 70's or early 80's. They must have been made in America but sometimes English sung music comes from Germany, Holland too so I'm not sure of that.

1st song is sung by a group of men in chorus. In addition to typical pop-disco instruments, a piano was present in the song. The piano style is similar to the first 10 seconds of Danny Brillant's Y'a qu'les filles qui m'interessent (https://youtu.be/PNfrbNW790k) Theme was cheerful and moving.

2nd song is sung by a woman, whose voice was similar to (probably) Olivia Newton John or ABBA's main singer, or even to Madonna's voice in "Like a virgin" if you know it.Theme of the song was contemplative.

I've myself impersonated those 2 songs, here's the mp3 file (about 1.3MB)

https://www.dropbox.com/s/xrpt5b0b6a...om70s.mp3?dl=0

Thank you.