Leksell participated in
Idol 2017 where he made it to the Top 21 and qualifying week before being voted off. In 2018, he released the song "Tappat" which received over 5 million streams on
Spotify. As of February 2020, the song has amassed over 25 million streams. His fifth single "
Svag" peaked at number one on the Swedish singles chart, thus becoming Leksell's first single to reach that position. He released the song a few weeks after performing it at
Musikhjälpen in 2019. The song held the number one spot for seven consecutive weeks, from week four to week eleven, being replaced by
the Weeknds "
Blinding Lights" in the latter week. However, "Svag" returned to number one on the chart in week 12 and stayed there for one week. The song was subsequently certified nonuple platinum in Sweden. It also peaked at number one on the
Norwegian chart. He released his sixth single in March 2020, "Fantasi", which peaked at number seven on the Swedish singles chart. Leksell subsequently performed at the
SVT live-show
En kväll tillsammans on 11 April 2020, in support of the fundraising. In May 2020, Leksell performed the song "Svag" together with Norwegian singer
Astrid S at the border between Norway and Sweden. On 17 June 2020, Leksell released his debut
studio album, titled
Fånga mig när jag faller. The album contains the previously released singles "Vart du sover", "Tappat", "Allt för mig", "Klär av dig", "Svag" and "Fantasi". It charted at number four on the Swedish singles chart. On 19 January 2024, Leksell released his second studio album,
Tid & tro. This album also topped the charts in Sweden. == Awards and nominations ==