He is considered one of the most successful Burmese singers[1] and rose to fame with his debut album Chit Thu Myat Yet Nayt.
After his win, he prepared for her debut album named "Chit Thu Myar Yet Nayt" (The Day of Lovers).
Sithu has starred the leading role in the film named Nhote Kham Htet Ka Dar Thwar.
Si Thu and Tin Zar Maw performed together in a live duet concert called "Beyond the 21st Duet Live" on 27 August 2016 at the Myanmar Convention Centre, where a huge crowd of thousands fans were celebrated.
[1] On 10 November 2018, he embarked on his one-man solo concert called "A Part Of Me" at the Hexagon Complex, Shwe Htut Tin, Yangon.