Metal Allegiance, the metal supergroup featuring core members David Ellefson (Megadeth), Alex Skolnick (Testament) and Mike Portnoy (The Winery Dogs, ex-Dream Theater), along with multiple special guests, have posted a new webisode for their song “Wait Until Tomorrow” featuring Jamey Jasta (Hatebreed), and Doug Pinnick (King’s X). Check out the clip below to see some studio…