On the evening of October 21st, Đen Vâu surprised fans with the release of the song "Cám Ơn" after only 30 minutes of releasing the music video for the song "Lối Nhỏ" as a gift to the Đồng Âm (name of Đen Vâu’s fanclub) when more than 5,000 "Show of Đen" tickets were sold out within 10 minutes after opening on October 18th.
As soon as the two music videos were released, Đen Vâu…
