Willie Nelson

The decision was announced just 24 hours before the event was set to kick off.

It will be a busy summer for the 89-year-old.

He'll be joined by John Fogerty, Margo Price, Flatland Calvary and more incredible artists.

On March 8, 1980, Nelson's "My Heroes Have Always Been Cowboys" soared to the top of the charts, becoming his fifth No. 1 hit.

On March 3, 1990, the country supergroup kicked off their concert tour at the Houston Livestock Show and Rodeo.

On Feb. 19, 1987, Nelson's movie 'Red Headed Stranger' premiered in Austin, Texas.

Find out who every country's top old-school country artist is.

Willie covers a classic Buck Owens song.

Get a first listen to Price's take on this Willie Nelson classic.

It's one of the most important country categories.