The Weeknd, 30, teased the posthumous collaboration with Juice Wrld in an Instagram post Tuesday. The Weeknd shared a photos of Juice Wrld smoking and used their nicknames in the caption. XO refers to The Weeknd's record label, while 999 is a symbolic number Juice Wrld used during his career. "XO + 999 Thursday Night," The Weekend wrote. Me and The Weeknd would make a diamond record... — . (@JuiceWorlddd) ...