Crossword puzzle clue "one named singer whose last name is gu mundsd ttir"

One-named singer whose last name is Adkins

One-named singer whose last name is Guðmundsdóttir

Actor whose first name is the title of a Best Picture he co-starred in, and whose last name is that film's director

One-named musician whose last name is Chryssomallis

"Shake It Off" singer whose first name is a presidential last name: 2 wds.

One-named singer whose name used to be spelled with a dollar sign

One-named singer whose real first name is Robyn

Boxer whose nickname is the last five letters of his last name