A-PINK's Jung Eunji has proved herself with a drama soundtrack.

Jung Eunji sang SBS drama "Three Days" soundtrack "It's You", settling in the upper music chart rankings. She dominated charts despite the presence of strong competitors in the soundtrack arena.

"It's You", released on the 5^th, has topped Bugs, Soribada, and Daum Music charts, and is in the top 5 on music charts Melon and Mnet.

Jung Eunji has recorded duet songs for soundtracks - "All For You" for tvN's "Reply 1997" and track for animation "Saving Santa" - but "It's You" is her first time going solo.

"It's You" is a pop ballad featuring sentimental lyrics and a beautiful piano and string harmony composed by Oh Chang Hoon and Park Sung Ho, who has worked on many drama soundtracks.