While ScHoolboy Q and Ab-Soul in fact did make appearances on Childish Gambino's latest mixtape Royalty, it looks like there was also plans to get fellow TDE member Jay Rock a feature on the project as well. Titled "Sour Faces," the new track surfaces today as Gambino's tour DJ, DJ So Super Sam, releases her new mixtape titled Trigger Happy, which included the previously unheard tune. Now that Gambino has collaborations with three out of the four members of TDE, let the speculations begin in regards to his collaboration alongside fourth member Kendrick Lamar. You can stream the possibly unfinished song down below. Also be sure grab the full download of DJ So Super Sam's Trigger Happy by clicking here.