I’ve got some very odd jingles with lots of freq sings but I don’t think they are the standard sound singers / package , I have mine listed as 1985 and your cut in my collection.
Both cuts are Standard sound (MMI) the first is the News jingle from the launch package (1985), the second is from the mini update they had in 1987 ish when they changed FM frequencies from 96 & 104 to 103.2 & 97.4.
Mark can you PM me as I’d love a copy of the frequency change ones.