[5] In March 2019, his single "Someone You Loved" (2018) topped the UK Singles Chart where it remained for seven weeks, and in November 2019, it reached number one on the US Billboard Hot 100; it was nominated at the 62nd Annual Grammy Awards for Song of the Year and won the 2020 Brit Award for Song of the Year.

In May 2020, it was announced that Capaldi's song "Someone You Loved" had become the longest-running top 10 UK single of all time by a British artist.

Capaldi was born in Glasgow, Scotland,[3] and lived there until he was 4 years old,[7] when his family moved to East Whitburn in West Lothian.

His mother becoming pregnant with Lewis came as a surprise to his family, being called a sort of "immaculate conception", because his father had had a vasectomy.

He played in Dumfries, Edinburgh and Fort William alongside Jacob, Rory Green and Zoë Bestel.

[19] After the initial release of the song, he was signed to the German branch of Universal Music Group, and was assigned to the Vertigo Berlin division.

[20] His debut single, as well as the songs "Lost on You" and "Fade" were featured on his first extended play Bloom[21] and later on his upcoming album.

[22] In January 2018, he joined German rock band Milky Chance on their North American leg of the Blossom tour.

[23] Irish singer Niall Horan invited Capaldi to support him on two dates on his Flicker World Tour at the Glasgow SEC Armadillo in March.

Capaldi was named as one of Vevo DSCVR 'Artists to Watch 2018'[24] and he won Best Acoustic Act at the Scottish Alternative Music Awards.

[26] In August, Irish Indie rock band Kodaline invited Capaldi to open for them at a concert in Belfast.

During his 2019 tour with Bastille,[29] the song reached number one on the UK Singles Chart and remained at the position for 7 weeks.

It also reached number one on the Billboard Hot 100, making him the first Scottish solo artist to top the US charts since Sheena Easton in 1981.

[42] On 5 August, he performed songs from his album with the Manchester Camerata for a special Live Lounge Symphony concert in Croxteth, Liverpool.

[43] From 16 to 26 August, he supported Ed Sheeran at the end of his Divide world tour, playing four gigs with him in Ipswich and Leeds.

[5] Two songs written by Capaldi were also released that year: Rita Ora's "How to Be Lonely" and Sigala's "Lasting Lover".

[63] In June 2023, Capaldi announced that he was taking an extended and indefinite break from touring, citing a need to focus on his mental and physical health.