“Sunflower” is the first single from the official soundtrack album Spider-Man™: Into the Spider-Verse (available December 14, 2018). The film opens in theaters nationwide the same day. Get the song here: https://postmalone.lnk.to/sunflowerYD The single re-teams Post Malone & Swae Lee after the two joined forces for “Spoil My Night” from the year’s biggest multi-platinum album,…