Keith Urban knows how to kick off a show. The country music superstar served as host of the 2020 ACM Awards on Wednesday, and he opened the remote awards ceremony with a hopeful, emotional message about the healing power of music.After an opening music number featuring a medley of live performances from Luke Bryan, Eric Church, Luke Combs, Thomas Rhett and Carrie Underwood — who sang from a number of different venues across Nashville — Urban took the stage at the empty Grand Ole Opry to introduce the unique format of the night's big show.«Due to the COVID world that we are living in right now, we won't have an audience here, but we have every one of you watching, wherever you are watching from right now, so thank you so much every one of.