Last year Amazon brought us U2 and Justin Timberlake to celebrate Amazon Prime day. This year we get to see Alessia Cara! Along with Julia Michaels and Kelsea Ballerini. Unlike last year you can check out the “Prime Day” performances anytime. The fun starts at 8:00p on July 11th on Amazon.com. Prime Day(s) starts July 16th at 3:00p through July 17th.