On Wednesday Dierks will be on The David Letterman Show.
BUT...
before that he will participate in a live webcast where he'll sing songs from "Home" as well as some of his other hits. "Live on Letterman" will be webcast from the Ed Sullivan Theater at 7pm.
You can watch it live or on-demand at the "Live on Letterman" website.
People in New York will also be able to watch it as it will be broadcast on the Times Square JumboTron. You can also catch it on various mobile apps.