Plus, see 'Girls' star Allison Williams prep for her Peter Pan role.
Beck, Sheryl Crow also participating in album honoring late country legend, Billboard Bulletin reports.
Singer/songwriters join tour to raise awareness about land mines.
Robin Williams' 'Man of the Year' is Hollywood's latest take on presidential politics.
Country-folk singer attracts the likes of Willie Nelson, Lucinda Williams and Steve Earle for Oct. 9 show.
Singer enlists Willie Nelson, Mark Knopfler, George Jones, Emmylou Harris, others.
Emmylou Harris, Willie Nelson, others taking part in all-star project.