Which song

[iDunnit]

Have you got a song in your head, and you just wanna know who it's by?
Google can't help you this time?
Post all your songs hear, and see if anyone know 'em....

My first...On a advert on TV, 'Now i've made my mind up, your going to be mine.'

.............know it?..................

[calculus]

Have you got a song in your head, and you just wanna know who it's by?
Google can't help you this time?
Post all your songs hear, and see if anyone know 'em....

My first...On a advert on TV, 'Now i've made my mind up, your going to be mine.'

.............know it?..................
It's by Donovan but I can't remember the title. It may come to me later.

Edit - It's Sunshine Superman