E-girls -- Follow me
little mix- secret love
Run Away - Royal Pirates
Wonder Girls - Why so lonely. 
Enternal Love - Michael Learns To Rock
Coda - Sponge cola XD
Monsoon - Tokio Hotel
hilcrhyme - loose leaf
W - Two Worlds OST Part 3 - IN THE ILLUSION by BASICK X INKII

Well, it's actually that awesome sounding music which turns up whenever a dramatic/awesome happens, but since the soundtrack has not been released I do not even know the name of that song and can't find it either, so In the Illusion is next one.
In W's 1st ep it plays when YJ realises she's on a roof and when she saw herself in the webtoon back in real world
I'm so gonna get it when soundtrack is released!
Paradise - Coldplay