Josh Groban "Had A Blast" Singing With Lady A

Last week in Los Angeles, Lady A played to a sold-out crowd at The Wiltern and welcomed 2 special guests to join them on a couple songs. American Idol alum Kris Allen joined the group on "Hey Jude" while singer Josh Groban came out on Lady A's heartfelt ballad, "Hello World." Check out this video of Josh Groban talking about playing with Lady A HERE.