Producer, singer and songwriter Leon Thomas is hotter than ever, and his critically acclaimed collaborations with artists including SZA and Ariana Grande have definitely made their mark on music.

Leon Thomas ’ “Mutt” is the top dog on Billboard ’s Hot R&B Songs chart (dated April 12) as it leads the list with a 3-1 jump ...

Just ask SZA or Keke Palmer or Issa Rae." Watch Leon Thomas' Tiny Desk Concert below. More from Billboard ...