Opening credits: Who's that chick - Rhianna and Davis Guetta
Waking up: Pretty Boy - 2ne1
Falling in Love: i11evn - The Hundreds
Fight Song: Breaking a Sweat - Skrillex and The Doors
Breaking up: Lightless (unplugged version) Beast
Getting back together: Back to you - Beast (Cool; I like this one)
Wedding: Rise to the Top - J Reyez and Tommy C
Birth of a child: Happy - Ashanti
Final Battle: Time's Up - LED Apple
Death Scene: Thank You - CNBLUE
Ending credits: 미쳤나봐 (Must be Crazy) - 소린 (Soran)

Most of mine don't even make sense. =_=

Opening credits: Bounce - JJ Project
Waking up: Happy Birthday - Yang Yoseob
Falling in love: Perfect - J-Co
Fight song: Go Back Again - Navi (Featuring Yong Junhyung)
Breaking up: Angel (Korean Vesion) - EXO-K
Getting back together: Skinny Baby - BEAST & A Pink
Wedding: Bad Girl (Japanese Version) - BEAST
Birth of Child: Baby Baby - Yang Yoseob
Final Battle: Change - Kim Hyuna (Featuring Yong Junhyung)
Death scene: Fight Together (Instrumental) - Namie Amuro
Ending Credits: Machine (Chinese Version) - EXO-M

Oh my, now that was fun. x3

Here's mine!
Opening credits: Boyfriend by Boyfriend
Waking up: Real by SHINee
Falling in love: Start by SHINee
Fight song: Feel by Marie Digby
Breaking up: Potential Break Up Song by Aly and AJ *what are the odds?*
Getting back together: Lollipop by Big Bang and 2NE1
Wedding: Forever Love by TVXQ
Birth of child: Dearest by Ayumi Hamasaki
Final battle: Smooth Criminal by Michael Jackson
Death scene: Perfection by Super Junior M
Ending Credits: Breathe by G-Dragon