Solo is a song by Clean Bandit featuring Demi Lovato. It is an upbeat dance track with a catchy chorus that will have you singing along. The song is about being strong and independent, and not relying on anyone else to make you happy.
From Wikipedia
"Solo" is a song by British electronic music band Clean Bandit featuring guest vocals from American singer Demi Lovato and pitched backing vocals from British singer Kamille. It was released on 18 May 2018 through Atlantic Records as the fourth single from the band's second studio album, What Is Love? (2018). The song was written by Lovato, Kamille, Grace Chatto, Fred Gibson and Jack Patterson, and was produced by Chatto, Gibson, Patterson and Mark Ralph.