Rookie group High4 took three music charts with their new track "Not Spring, Love, or Cherry Blossoms", featuring IU.

Released on April 8, High4's "Not Spring, Love, or Cherry Blossoms" ranked #1 on Melon, Naver music, and Daum Music.

IU and High4 member Kim Sung Gu had been close friends before debut; IU has not withheld support for her friend by writing the lyrics and featuring in the the music video of his new song.

IU introduced each member of High4 and aided in their promotion, listing their positive attributes on her fan cafe.

High4's debut song "Not Spring, Love, or Cherry Blossoms" starts with an acoustic guitar sound and features a funky groove sound with real instruments. The song carries the fresh beginning of Spring, and the harmony created by IU and High4 simply captures all ears.

Akdong Musician placed #1 on Olleh Music and Genie, while 15&'s "Can't Stop" took first on Mnet.com.

Park Hyo Shin's "Wild Flower", A-PINK's "Mr.Chu", and Yoon Min Soo-Shin Yong Je's "Fate" also listed themselves on the top tiers of charts.