^ Paper Heart sounds really nice, feels like Ending Page kind of song
The 2nd (Milk) and 3rd ones are also promising.
0:00 - 0:08 : 무지개 (Rainbow)
0:09 - 0:14 : MILK
0:14 - 0:22 : ?
0:23 - 0:32 : 뱉어내 (Spit it Out)
0:33 - 0:41 : ?
0:42 - 0:51 : Dracula
0:51 - 1:00 : ?
1:01 - 1:08 : Boom Bang Boom
1:08 - 1:16 : 종이 심장 (Paper Heart)
1:17 - 1:26 : All Night
1:26 - 1:36 : Red Light
Paper Heart also sounds little bit like SNSD's "Stay girls", don't you think?
The above video is private, but this link works for me: