Thomas Mustin, known professionally by his stage name Mustii, is a Belgian singer and actor. He has appeared in numerous plays, movies and TV shows, and has also released 2 studio albums and 2 EPs. Currently, he is one of the judges on the Belgian version of the show Drag Race (Drag Race Belgique).
On 30 August 2023, RTBF announced that Mustii would represent Belgium at the Eurovision Song Contest 2024 in Malmö with the song Before The Party's Over, finishing in 13th place in the second semifinal.