What songs are included in the DLC? Can't really check the link right now myself.
Here are some details from the Youtube Reveal:
▶ Price: 14,800 WON
▶ Music : TRILOGY 20 songs, RESPECT 1 New Original Song
▶ Bonus: TRILOGY GEAR SKIN, TRILOGY UI SKIN
[MUSIC LIST]
바람의 기억 (Memory of the Wind), Catch You, Mind Control, My Jealousy
NB Girls, Someday, STOP, Streetlight, Talk! Talk!, The One
Ventilator, ZET, For Seasons ~Air Guitar Mix~
A Lie ~Deep Inside Mix~, Bye Bye Love ~Nu Jazz Mix~
Get Out ~Hip Noodle Mix~, sO mUCH iN LUV ~Melodic Twisted Mix~
Syriana ~Blast Wave Mix~, Yo Creo Que Si ~Live House Version~
Your Own Miracle ~Disco House Mix~