The Willie Nelson anthem ""On the Road Again"" is one of the most enduring and recognizable hits of modern American music. But it could also be the theme song of country music artists who spend more hours than they can count on their tour buses going from city to city and state to state performing for their fans. In the CMT special, CMT 20 Greatest Tour Buses, hosted by the country duo The Warren Brothers, CMT hits the road with country's hottest stars to see where they live while on tour. The one-hour special tells stories of the tour buses of the stars, including some wild bus moments and artists' favorite memories about living on the road. CMT 20 Greatest Tour Buses will also give viewers an insider's view of these homes on wheels -- what it is like to sleep in such small quarters; how the buses are decorated; which artists have shared buses and much more. Check out the kitchens, bathrooms, bedrooms and much more on these rolling homes to the stars when CMT presents CMT 20 Greatest To