"Mz. Hyde" is a song by the hard rock band Halestorm. It is taken from their second album, The Strange Case Of... and was released as a single on October 21, 2013. The music video for the song was released to YouTube on February 4, 2014.According to Lzzy Hale, she wrote "Mz. Hyde" as a reflection of having two sides to her life, both on and off stage—she said that "For years I've been writing about these two sides of myself, and I wanted to capture that in a song."