[1] Between 2002 and 2006 he formed a band Slobodan River with Ithaka Maria and Tomi Rahula.

In 2012, Stig played Moritz in the Estonian original production of the musical Spring Awakening.

He is also part of electronic music duo Kisma, alongside Vallo Kikas.

Rästa entered Eesti Laul 2015 with the song "Goodbye to Yesterday", a duet with Elina Born.

Rästa returned for the second time as a composer for Elina Born in Eesti Laul 2017, she finished 10th in the final with the song "In or Out".