TheSingingMixer: #GreenDays’ #21Guns is a powerful #antiwarsong & carries a message we can still heed today! @MarySaxophone crafted this rocking #cover with #saxophone #violin #trombone #piano & #percussion! I love #collab singing with her #fullband because it’s such a gigantic sound👍🏼. Feel free to #takethelead & #joinmycollab! #tsm