The Best Hit OST - Which song is your favorite?

OST Part 1
Song: Beautiful, Beautiful
Artist: PUNCH and GLABINGO (글라빙고)

OST Part 2
Song: Dream 꿈은 
Artist: Kim Min Jae and Younha

OST Part 3
Song: The Sky of Youth (젊은 날의 Sky )
Artist: Yoon Mi Rae

OST Part 4
Song: Tonight  오늘 밤 
Artist: BoA, Mad Clown

OST Part 5
Song: Night Sky  밤하늘 
Artist: Park Kyung (박경) of Block.B 

OST Part 6
Song: If You
Artist: Jo Kyu Hyun

OST Part 7
Song: I Always
Artist: Changmo (창모 )

OST Part 8
Song: My Love
Artist: T-ara

Song: Proposal
Artist: Lee Se Young

Song: Say It
Artist: J2