Jake Gyllenhaal linked arms with Winston Marshall, of the band Mumford & Sons, during the Jazz and Heritage Festival in New Orleans on Friday. The actor is apparently good friends with Winston, who plays the banjo for the Grammy-winning group — he recently was spotted hanging out with them on their Railroad Revival tour, which took Mumford & Sons from city to city on a special train. Jake had the weekend off to focus on his love of music during a break from shooting his new movie End of Watch. He actually shaved his head to play the role in the cop drama, also starring Michael Pena. Jake's new look is a daring one, but does it affect his placement on your PopSugar 100 list of the Sexiest Celebrity Men?