Willie Nelson refuses to let his age define him ... The country musician brought out his famous guitar, Trigger, to play ...

Willie Nelson wrote "Angel Flying Too Close to the Ground" about Amy Irving. Now she's made an album of his songs.

In a 2014 interview, Nelson's harmonica player Mickey ... string classical acoustic (pictured here in 2007) in Willie's hands is named "Trigger" (after Roy Rogers' horse) and was bought in 1969 ...

To mark Willie Nelson's birthday today [April 29], I thought ... You’ve been playing the same guitar, Trigger, since 1969. What’s your secret to keeping it in good working order?