It was the Pierces who did the original song with the AAR. But, the AAR was on tour with Vedera. So Kristen, the lead singer of Vedera sang with them since she was there.
AHH ! i was here lmfao ! this concert was amazingg. i was firstt lookingg at the leader singer saying wow he wore this last night lmfao ! ahha gooodd concertt. nice nicee songg. (:
Kristen has verbally stolen my musical heart she is fucking amazing omg I just now found her how long has she been around without me ever even knowing about her at all