Thịnh Suy has become famous after his first song “Một Đêm Say” that became a phenomenon when it was released on December 30th, 2018. After the surprise success of this song, he continued to release the second song named “Thắc Mắc” on June 15th, 2019. “Thắc Mắc” was also composed by Thịnh Suy just like his previous song and Tee D is the music producer for this song. It has a playful melody that is simple...