The teen heartthrob. Justin Bieber gave an a Capella (sneak peak) rendition of the first line of the track on the account -- then alerted his followers to the clip via his Twitter page. An instrumental clip of the track can also be heard in the advert for his forthcoming fragrance The Key.<br /><br />For more Hollywood news and gossip:<br />http://www.youtube.com/hollywoodbackstage<br /><br />Subscribe at: <br />http://www.youtube.com/subscription_center?add_user=HollywoodBackstage<br /><br />Like us on Facebook:<br />http://www.facebook.com/hollywoodbackstage<br /><br />Follow us on Twitter:<br />https://twitter.com/#!/HollywoodBstage
