[2][4] After completing his pre-vocational secondary education, Ellerström attended a culinary college in Amsterdam and worked as a cook at a local restaurant for some time.

[2][4] He subsequently featured on Frederiks's 2011 track "Brawler", alongside Faberyayo, and joined him on his concert tour in 2012, using the stage name "Young Kermit".

[2] In 2014, he was signed to the record label Magnetron Music [nl] owned by De Jeugd van Tegenwoordig producer Bas Bron.

[5] Since 2020, Ellerström has been releasing songs in which he combines hip hop with levenslied – a fusion genre he dubbed kibbelingsound (after palingsound and kibbeling).

In December 2023, it was revealed that he had co-written the entry selected by AVROTROS to represent the Netherlands in the Eurovision Song Contest 2024, to be performed by Joost Klein.