@SimplySteveRedux - I got Showing Out already by proxy (I think?!)
The clue for the following 70s is singer is an American soul legend with loads of chart hits.
This is from a classic album of his.
La, la, la, la, la, la, la, la, la
La, la, la, la, la, la, la, la, la
La, la, la, la, la, la, la, la, la
La, la, la, la, la, la, la, la, la
For you there might be ....
But through my eyes the light of you it's all I see
For you there might be another song
But all my heart can hear is your melody