Heat

This is a song from, I believe, the 70s. Sort of a higher voice, though I'm pretty sure it's not the Bee Gees.

I heard it (again) on a store's background music, here are the lyrics I wrote down:

sentimental journey
Through your head again
all that I needed

When I wrote down these lyrics I was fairly confident that these lyrics were right, but a search on google didn't turn up anything for me. Any ideas?