Woody at 100: The Woody Guthrie Centennial Collection (Smithsonian/Folkways), last month's most-played album on folk radio according to FOLKDJ-L, also continues to top the Roots Music Report folk radio chart this week. Sun Midnight Sun (Nonesuch), the sophomore release by singer-songwriter and multi-instrumentalist Sara Watkins of Nickel Creek, returns to the #1 position on the roots country chart. [To view the latest Roots Music Report Folk and Roots Country Top 50 albums charts, click on the headline.]