It's been a six-week summer extravaganza of music, and now you can be in the audience for the live televised finale of ABC's Greatest Hits at Microsoft Theatre. Comedian Arsenio Hall and country singer Kelsea Ballerini play hosts for the evening, welcoming to the stage such big-name performers as Ariana Grande, Adam Lambert, New Edition, Sheryl Crow, Richard Marx, Smash Mouth, Hunter Hayes and many more for a veritable parade of musical hits from the 1980s through the 1990s and right up to today. You've watched the show on TV throughout the summer; send it off in style by seeing the finale live.