Metal Allegiance is an American heavy metal supergroup, formed in Long Island, New York, in 2014 by bassist and songwriter Mark Menghi. Shortly after, he recruited bassist David Ellefson (formerly of Megadeth), guitarist Alex Skolnick (from Testament), and drummer Mike Portnoy (formerly of Dream Theater). Though the group does not have an official lead singer, they usually hire guest musicians to contribute vocals and/or guitar parts to their studio recordings and live shows, including Andreas Kisser of Sepultura and Mark Osegueda of Death Angel. To date, Metal Allegiance has released two studio albums and one EP.