Periphery is one of those bands that are difficult to forget. It's not because they are constantly in the mainstream, shoved in your face by way of radio play, music videos or non-stop festival headlining. Although I'm sure they wouldn't turn down any of that.

No -- you remember Periphery because of the musical prowess. The heavy yet delicate mix of poly-rhythmic patterns and climactic melodies. The unexpected tumultuous flow of the music, and variation between raw screams and soaring vocals. The members, vocalist Spencer Sotelo, guitarists Misha Mansoor, Mark Halcomb and Jake Bowen, bassist Adam "Nolly" Getgood, and drummer Matt Halpern, are actually progressive in every sense of the word.

Periphery is a djent movement pioneer, often compared to a younger, heavier Dream Theater. The members self-produce everything they do, and since the self-titled debut five years ago, have created two other albums. The third, a double concept album called Juggernaut, comes out on January 27.

Juggernaut is two whole albums worth of material released as two separate discs, one called Alpha and the other Omega.