Chris Stapleton has reached a career milestone very few have achieved...and none of those performers are country, making him the first. Stapleton's debut album, "Traveller," just notched its 500th week on the "Billboard Top 200 Albums" chert. Released in May of 2015, the album has spent almost ten years on that chart, sitting comfortably at #82 on Billboard's most recent tally. This puts Stapleton in the company of absolute legends like Pink Floyd ("Dark Side of the Moon"), Fleetwood Mac ("Rumours"), Nirvana ("Nevermind") and Michael Jackson ("Thriller"). "Traveller" came out in May of 2015, and has been certified 7X Platinum.