Sylvester Willy Sivertsen (born 8 May 1992), known professionally as Sly, is a Danish successful songwriter and music producer who has written and produced the following: Dua Lipa's "We're Good",[1][2][3][4] Sigrid's album "How To Let Go",[5][6] Jonas Brothers' "Comeback"[7][8] (from the album Happiness Begins), Shawn Mendes' "Higher", The Chainsmokers' "Side Effects", Liam Payne’s "Slow" and "Live Forever" (featuring Cheat Codes), among others.
[9] Sly is the son of Danish singer and songwriter Lis Sørensen and drummer Jan Sivertsen.
[10] BMI Award 2023 "Most-Performed Songs of the Year"