Willie Nelson, who has sold more than 50 million albums in his lifetime, has been busy with many projects this year as a cameo in Snoop Dogg’s song “My Medicine” and sang a song with Mariah Carey.

In February, he is releasing an album with western swing songs. In March, "Naked Willie", an album of Willie’s recordings on RCA from 1966 to 1970.

Nelson, who is at 75, tours 200 days of the year, smokes weed nonstop, and is trying to launch a biodiesel revolution.