[2] Stjernberg started his career in the boyband What's Up!, and became a contestant in Idol 2011, placing as first runner up in the final.

The other finalists that made part of the band were Eric Saade,[3] Luwdig "Ludde" Keijser and Johan Yngvesson.

The song, also sung by the winner Amanda Fondell in a separate version, is written and produced by Idol 2004 first runner up Darin Zanyar amongst others.

Since then, Robin has written and produced a number of songs for both other artists as well as himself, and also collaborated with award-winning songwriters such as Liz Rose, Matt McGinn, Gordie Sampson and Burt Butler.

In 2019 and 2020, Robin spent a lot of time in both Stockholm and Nashville, aiming to develop his own artistry.

Robin has written and produced music for artists such as Sandro Cavazza, Dotter, Estraden, Megan Thee Stallion, Anna Bergendahl, Jill Johnson and Steps.

Robin also took part in writing The Mamas's entry in Melodifestivalen 2021, "In The Middle", which placed third in the final.

In 2020 he took part in writing the hit song Lean on Me, which placed #1 on Swedish charts and airplay.

Robin Stjernberg and Benjamin Roustaing started their group project ohFrank during 2020.