off the top of my head...
Male
Zayn Malik & Liam Payne off that boyband everyone secretly loves
Sufjan Stevens
Brandon Flowers
Miguel
Guy Berryman (Coldplay)
Paolo Nutini
Fabrizio Moretti (The Strokes)
oh and Enrique obviously
Female
Jhene Aiko
Shakira
Charli XCX
one of HAIM but I forget which one
Norah Jones
Cassie
Lykke Li
Lana del Rey
i'll refrain plonking up songs
might be here all day