December Day: Willie's Stash, Vol. 1 is a collaborative album by Willie Nelson and his sister Bobbie Nelson, released on December 2, 2014. It is the first volume of the Willie's Stash series, which compiles intimate and personal recordings.
The album was recorded at Pedernales Recording Studio in Spicewood, Texas, and produced by Buddy Cannon. It includes classic songs from the American songbook, such as "What'll I Do" by Irving Berlin and "I'll Be Seeing You", along with original compositions by Willie Nelson.
December Day was conceived as a tribute to the musical relationship between Willie and Bobbie Nelson, who grew up playing together in church. The album received positive reviews for its nostalgic atmosphere and the chemistry between the siblings.