The four boys of talented vocalist group Sweet Sorrow return to the stage on KBS's 'Music Bank' to perform their new title track titled "VIVA!".

The jazz-based track acts as a refreshing change from the norm that viewers are used to seeing, especially on the popular weekly music programs.

Today's performance includes a special feature from Brave Girls' Yejin who fills in the spot of Lee Sora.

Check it out below and you can see the full �'Music Bank' performances�here.

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