Big Boi and electric rock duo Phantogram made their official debut as the new supergroup, Big Grams. The trio performed at the Epic Records' first annual Epic Fest at the Sony Pictures Lot in Los Angeles on Saturday (Aug. 29). The new festival also featured performances from Future and Ozzy Osbourne.

The group announced their decision to collaborate back in 2014 during OutKast's reunion tour, where Big Boi revealed the trio was working on their premiere project and that a portion was already completed. Fast forward a year later and it looks like the project is just about ready to hit shelves. Earlier this month, Big Boi posted a photo on Instragram, saying that the LP is done. According to BillboardBig Grams confirmed during their set that their debut album would be "coming soon." Big Grams still does not have an official release date, but at least we know the project will come soon. Big Grams' performance at Epic Fest was rather short with the new group only performing three songs together. In addition to performing together for the first time, Big Boi confirmed via his Twitter page that Big Grams has already shot the video for their first single. Check out some fan recaps above and below.

Something like this... #BigGrams #EpicFest

A video posted by #Takeontheglobe (@godreamer) on

#biggrams performing at #EpicFest2015 #LAReid #saturdayshenanigans #goodmusic

A video posted by Autumn Moultrie (@autumnmoultriebeauty) on

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