I can't do it! Whenever I try to sing in harmony (as a background to the vocalist in my band) my voice just automatically adjusts to the note of the lead vocal. I know all of my scales, I know that singing harmonies basically involves singing a lead, and then a 3rd above or below the lead. Even when I play the harmony note I will be singing on piano to prepare myself, whenever it gets to my part I just listen to the lead and my voice sings the lead note. I can sing an octave above or below the lead note but it's always the same actual note as the lead rather than a note a 3rd up or down from it.
Do any vocalists have any tips?
Probably nobody knows what I'm talking about but I thought I'd ask anyway.