He was in Eventyrteatret (Adventure Theatre) where he took lessons in acting, dancing and singing. He was invited to sing in the Stig Rossens Christmas special, also singing at various festivals.
In 2008 he played the role of Læris in the film Frode og alle de andre rødder directed by Bubber. He has also sung for cartoon series like Tordenguden Thor, in the film Far til fire på japansk, and memorably in Happy Feet Two, where he sings with the voice of the little penguin character.
Winner of Skjulte stjerner
In 2011, he was selected by Tim Schou, the lead singer of the Danish band A Friend in London as a potential "star" that participated in the inaugural season of Skjulte stjerner (meaning "Hidden Star"). Tim Schou would mentor Thomas throughout the 8 weeks of the show from 2 September to 14 October 2010 and make various duets with him.
|9 Sept 2011||Week 1||"Firework"||Katy Perry||Safe|
|16 Sept 2011||Week 2||"(I've Had) The Time of My Life" /
|Bill Medley and Jennifer Warnes /
|23 Sept 2011||Week 3||"New Tomorrow / "Calling a Friend"||A Friend in London / A Friend in London||Safe|
|30 Sept 2011||Week 4||"Over the Rainbow"||Judy Garland||Safe|
|7 Oct 2011||Semi-Final||"Listen" /
"Dancing on My Own"
|Beyoncé Knowles /
|To the final|
|14 Oct 2011||Final||"Moves Like Jagger" /
"Run to You"
|Maroon 5 feat. Christina Aguilera /
|"Over the Rainbow"||Judy Garland|
Thomas with his mentor partner Tim Schou won the show in the final against runners-up Mie mentored and coupled with Karen and third Emily mentored and coupled with U$O.
Thomas went on to win 250,000 Danish kroners and just after the program released his debut official song "Almost There" featuring Tim Schou.
|2014||My Sound of Christmas||18|
- 2011: "Almost There" (featuring Tim Schou)
- 2008: Frode og alle de andre rødder as Læris
- DanskeFilm: Thomas Meilstrup
- Thomas Meilstrup fra Skjulte Stjerner træner i Farum (in Danish)
- "Thomas Meilstrup discography". danishcharts.com. Hung Medien. Retrieved 4 December 2014.