Nils Kurt Erik Einar Grönberg (born 5 September 2002) known by the stage name Einár is a Swedish rapper whose first solo single “Gucci / Duckar Popo” received over a million streams on Spotify. His second music single "Katten i trakten" peaked at number one on the Sverigetopplistan in February 2019. The follow-up "Rör mig" in May 2019 entered the Sverigetopplistan chart at number 3 in its first week of release.