In 2001 he took part in a Hungarian production of Hair directed by Mészáros Árpád Zsolt.

Vastag played the role of Aquarius in the musical theater piece.

They both advanced to the Top 5 in week 8 but faced elimination as the bottom two contestants, resulting in Tamás' departure.

In week 9, Csaba found himself in the bottom two again but was saved, defeating Veca Janicsák.

Despite facing elimination for two consecutive weeks, Csaba ultimately emerged as the winner of the competition in the final held on December 19, 2010, defeating the other two Top 3 finalists: Nikolas Takács (runner-up) and Norbi L. Király (3rd place).