More than 20 cross-genre artists and musicians have come together to record a new song, “Quarantine,” that benefits the MusiCare COVID-19 Relief Fund. Dubbing themselves The Quarantine All-Stars, the award-winning ensemble includes Brad Paisley, Steve Wariner, Chuck Leavell (Rolling Stones), Jonathan Cain (Journey), Sony Emory (Earth, Wind & Fire), Dan Falcone (Lady Gaga), Jeff Coffin…