Weeks after pop-rock duo A Great Big World performed their single "Say Something" alongside Christina Aguilera on "The Voice," the three musicians linked up once again to play the somber surprise hit at the 2013 American Music Awards, live from L.A.'s Nokia Theatre on Nov. 24.
With her hair in a braid and wearing a muted black dress, Aguilera sang an original verse midway through the performance, which included a string section but a fairly bare stage compared to the evening's more gaudy showcases. With A Great Big World's Chad Vaccarino manning the keyboard, the group's Ian Axel sat at the grand piano and stamped his feet furiously as "Say Something" approached its emotional climax.
