From the Bobby Mason website:
During the mid-sixties Bobby Mason was a well-established musician in Southern California, playing major venues throughout the area. In 1969 Bobby Mason came to Aspen from Hollywood to play a two-week engagement at the Aspen Inn. Within a week and a half Bobby decided Aspen was going to be his home because of the mountains and the people, who over the years have become his family. Since 1969 Bobby has played with John Denver, The Nitty Gritty Dirt Band, The Eagles, The New Grass Revival, Jimmy Buffett, Bo Diddley, JJ Cale, Dan Fogelberg, Kenny Loggins and countless others at nearly every club in Aspen. The late Aspen Times entertainment editor Stewart Oksenhorn dubbed him “Aspen's truest music icon”
More at http://www.bobbymason.com/