Alex Gaskarth (All Time Low) and Lynn Gunn (PVRIS) Cover "Say Something"

While on their recent promo trip across the pond in support of Future Hearts, All Time Low performed an acoustic set at Spotify's HQ in the United Kingdom.

Frontman Alex Gaskarth treated fans in attendance to a cover of A Great Big World and Christina Aguilera's "Say Something," and who accompanied Alex for this?! Lynn Gunn of PVRIS!