On May 23, Red Velvet performed at an annual festival at Chung-Ang University.
Following the last song, Red Velvet got ready to say goodbye to the audience.
Since the instrumental version of 'Bad Boy' was not available, they said, "In that case, we'll all have to make sounds and create music ourselves."
The audience screamed from the bottom of their hearts in agreement, so Red Velvet responded, "Okay, we've never tried this before, but we'll give it a go."
When the five members began performing the song, they giggled at the whole situation, but later proceeded to perform it in a serious manner.
After managing to pull off a performance without any accompanying music, they asked the audience how it was.
The audience shouted, "It was amazing! Do another one, please!", then asked Red Velvet to perform 'Peek-A-Boo'.
They successfully performed another song without music, and once again impressed the audience with their fascinating singing and dancing.
Meanwhile, Red Velvet released a Japanese version of its hit song 'Power Up' last month.
(Lee Narin, Credit= 'Mera' YouTube)
(SBS Star)