Hey dude, this is some danish guys from tha late 50ties and eraly 60ties who had a fine career in Denmark, Jill and the four jacks was an american band from the late sixties and the two bands have nothing in common. I remember from good old Napster days, where i tried to locate Four Jacks and came to know Jill and the Four Jacks
As many others already have answered, it's song in danish. If you want to learn playing the guitar, this melody is a good training, because it's only two accords to switch between. Latlely another group named four Jacks have formed, to keep the old original songs of Four Jacks alive.
Why do I spend several hours listening to their songs every week?
I have no explanation other than it's good music for Danes.
I love Four Jacks and their songs!
Is this what You are looking for ?
Four Jacks and a Jill / Master Jack 1968 or the same in another look
Master Jack" - 4 Jacks & a Jill
Just copi and seek