This:3

Baby I - Ariana Grande *-*
&
Heart Attack - Demi Lovato *-*

this

Ooh... tough one... Sadness and Sorrow from Naruto, I guess. 'Tis beautiful. :')

Carly Rae Jepsen's More than a Memory
Ariana Grande's Put your Hearts Up
Victoria Justice's Tell me that you Love Me
Miranda Cosgrove's Shakespeare
Taylor Swift's Ours
Demi Lovato's Skyscraper
Selena Gomez's Who Says
Miley Cyrus's Party in the USA

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SNSD/Girls Generation's Promise and Baby Steps
Girl's Day's Don't Forget Me (nareul ijjimayo) and White Day
KARA's I'll be There and Pandora
B2ST's Shadow and Rain
BAP's One-shot and Power
B1A4's OK and What's Happening?
Infinite's The Chaser and Be Mine
Super Junior's Sexy, Free and Single
SHINee's Dream Girl
2ne1's I AM THE BEST
Secret's Shy Boy and Talk That

TO MANY TO MENTION when it comes to KPOP :3

Paramore - Last Hope

Within Temptation - Our Farewell

I have a bunch but one is called "Drown In You" by Daughtry. Since it was on the album for "Batman: Arkham City", it combines what my brother likes (batman) with what I like (daughtry)

this

Katy B - Crying for No Reason <3

Demi Lovato - Confident
Demi Lovato - Stone Cold
Demi Lovato - Kingdom Come
Demi Lovato - Lionheart
Demi Lovato - Old Ways
Ariana Grande - Focus
Fall Out Boy feat. Demi Lovato - Irresistible