Elizabeth "Libba" Cotten (January 5, 1893 – June 29, 1987) was an American blues and folk musician, singer, and songwriter. A self-taught left-handed guitarist, Cotten developed her own original style. Her approach involved using a right-handed guitar (usually in standard tuning), not re-strung for left-handed playing, essentially, holding a right-handed guitar upside down. This position required her to play the bass lines with her fingers and the melody with her thumb. Read more on Last.fm