Don't know to be honest. I was very young at the time and I've still got this:
Don Spencer from Playschool Sings 21 Children's Favourites. So perhaps my folk interests extend from this album! ;-) It has some songs there which could be deemed Folk-Rock, though Don Spencer is strictly folk! :-D
If we're talking Pop/Rock/Metal or whatever, then the first album I might have got was a Culture Club album - can't remember which one it was cause my Dad took care of the tape!