Board Thread:Fun and Games/@comment-5751180-20131121140122/@comment-5751180-20131220175259

Answers:

1. Justin Bieber and will.i.am both have recorded a song titled 'Heartbreaker';

2. Tulisa, Owl City and Jennifer Lopez all have a song titled 'Live It Up'.

3. Youtopia and Alive both feature Adam Young;

4. Bleeding Love and Got 2 Luv U are both written by Ryan Tedder.