The Majesty Symbol below, including the dream theater Font.
The Majesty Symbol is the name of the logo that is used by the Progressive Metal band Dream Theater. The logo was inspired by the Mary, Queen of Scots' mark. however, it was reworked by Dream Theater's former vocalist Charlie Dominici to use on the When Dream and Day Unite front cover art. It was created back when Dream Theater was still known as Majesty, hence why it is called The Majesty Symbol (even though they changed their name shortly after making it). Despite Charlie leaving shortly after the album was released, and despite Charlie making the logo himself, (including having it tattooed on his arm), the band kept the logo from then on and it has appeared on nearly every Dream Theater release, including Bootleg releases, Demos, and every studio album by Dream Theater.
The Majesty Symbol is made up of three greek letters all in one, them being the letters Phi, Mu, and Lambda, all of them in capitals:
Φ Phi
Μ Mu
Λ Lambda