Gary Clark Jr., Willie Nelson, Patty Griffin and Delbert McClinton all emerged victorious at Sunday's 62nd annual Grammy Awards in Los Angeles, winning a total of six awards to mark one of the best days for Austin artists in Grammys history. Clark, nominated for four awards, won three: Best Contemporary Blues Album for "This Land," and both Best Rock Song and Best Rock Performance for the album's title track. The native Austinite spoke briefly in accepting the Rock Performance award, thanking Austin's Arlyn Studios and its in-house engineer/production team of Jacob Sciba and Joseph Holguin, as well as his wife and members of his band and management team...