Boy Group Seven O'Clock show, the music and the vocals are cool in MV Debut ' ECHO '!

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Rookie boy group containing 7 members named Seven O'Clock just make its inaugural debut with the release of a music video entitled ' ECHO '.

' ECHO ' is the main song on the first EP Seven O'Clock given the heading ' Butterfly Effect '. Seven O'Clock were led by leadernya called A-Day and other members of Vaan, Hyun, Young Hoon, Jung Gyu and Tae Young.

The Group was under the auspices of the Agency STARO Entertainment stunning debut song that tells a story of happiness.

Mini album ' Butterfly Effect ' contains a total of 5 songs including the song titled ' Time Machine '. A member named A-Day note was very active role in the creation ofthe songs on the album.

Just listen to the music and watch the video below!