The ongoing coronavirus pandemic has wreaked havoc on most shows that feature musicians in performance before a live audience, so tonight's new offering, "The Very Best of John Prine," is just that: highlights of the late singer-songwriter's eight appearances on "ACL" dating back to 1978. Songs include "Paradise," "Sam Stone" and "Angel From Montgomery." Bonnie Raitt makes a special guest appearance, and Jason Isbell reportedly has recorded a special introduction for this episode.