Ruben Markussen (born 23 March 1995), known mononymously as Ruben, is a Norwegian singer and songwriter. Growing up in Bjarkøy, a small village of 300 inhabitants in Harstad, northern Norway, he battled through mental health issues from his young days. his debut single "Walls" charted in Norway on basis of huge streaming online charting on VG-lista the official Norwegian Singles Chart making it to number 8. As a result, he moved to Oslo to further his career. He was nominated for Norwegian P3 Gold 2018 award in 2018 "Newcomer" category for the song during Spellemannprisen receiving a scholarship. His follow up "Lay by Me" has charted in both Norway reaching number 8. Both singles also charted in Sweden. He is signed to Universal Records in Norway.