Who is the artist?

Recorded to cassette tape from Swedish radio back in the days when that was the way to catch new music. According to notes on the tape sleeve I recorded the mysterious song Apr 5 1980.
The other songs on the tape were recorded before, on and after that date. In all, the tape was filled within a couple of weeks. In general, most of my radio tapes were recorded from the P3 channel but I don't know if that also was the case for the mysterious song. There were other channels too.
Songlist:
Another nail in my heart - Squeeze
Fall - Psychedelic furs
I’m in love - The Crooks
King - UB40
Hello I’m your heart - Bette Bright
Happy house - Siouxsie and the Banshees
Bionic Man - Fabulous poodles
? (the mysterious song) ?
You treated me wrong - Maywood
Deceives the eye - Madness
You’ll always find me in the kitchen at parties - Jona Lewie
Talk of the town - Pretenders
A song from under floorboards - Magazine
Steel away - Robbie Dupree
Hemma hela dan - Nektaris
Stupefaction - Graham Parker
I’m alive - Electric Light Orchestra
No doubt about it - Hot Chocolate
Shape I’m in - Jo Jo Zep & the Falcons
Restless Heart · Southside Johnny & The Asbury Jukes
Shadazz - Suicide
Hope and Glory · Clive Langer & the Boxes
Hold on - Carolyne Mas
There There My Dear · Dexys Midnight Runners
Everything works if you let it - Cheap Trick
Thanks for your interest in this pretty obscure matter. 🙂