This luthier keeps Willie Nelson's legendary guitar playable

Willie Nelson's Martin N-20 guitar, affectionately known as Trigger, has seen some shit. Happily, the majority of the shit it's seen has been in the name of making countless music lovers, the world over, happy. Over the years, Willie's finger-pickin' playing style has worn second soundhole into the guitar (not to mention the other carnage that this poor instrument has somehow survived.)

To keep Trigger alive and playable, Texas-based luthier, Mark Erlewine, gives the iconic instrument a whole lot of TLC during the guitar's annual checkup.