Florence + the Machine Cover Cash, Otis for 'Unplugged'

[caption id="attachment_33089" align="alignnone" width="640" caption="Florence + the Machine perform for 'Unplugged.' Photo courtesy of MTV."]Florence + the Machine 'Unplugged'[/caption]

Last fall, Florence Welch told Matt Pinfield that her favorite song of all time is "Try a Little Tenderness," most famously sung by Otis Redding. She reinforced her love for the soul burner at her Unplugged performance, where she belted out a gorgeous version that paired her soaring vocals with just a piano. Later on, she lightened the mood a bit when she brought out Queens of the Stone Age's Josh Homme (sporting a countrified mustache) for a duet on the Johnny Cash classic, "Jackson." Check out these fantastic moments below, and watch her entire performance at MTV.com.

Watch "Try a Little Tenderness":

Watch "Jackson":