All Time Low Perform "Backseat Serenade" with Cassadee Pope

All Time Low were joined on stage earlier this week by Cassadee Pope at the Best Buy Theater in New York City, who provided guest vocals on "Backseat Serenade."

You can watch a fan-shot video of the performance below.

The band are currently touring across the country alongside Pierce The Veil, Mayday Parade and You Me At Six on the Spring Fever tour. All dates and ticket information can be found here.