"New" - THE HOLLIES - He Ain't Heavy He's My Brother - "Backing Track At Soundback"

http://www.soundback.co.uk/ will be featuring a backing track each day. Today's song and featured backing track is "He ain't heavy he's my brother" by "The Hollies"

http://www.soundback.co.uk/THE-HOLLIES-backing-tracks/He-Ain-t-Heavy-He-s-My-Brother/1759.php

The first hit by the Hollies was?

Answer on a blog post.