Star One (also referred to as Arjen Anthony Lucassen's Star One) is a Dutch progressive metal supergroup/side-project of Arjen Anthony Lucassen of Ayreon fame.
Unlike Ayreon, albums don't follow one storyline; instead, each song is a different story with a sci-fi concept, most of the tracks based on existing movies and series. The band takes its name from the second season finale of Blake's 7.
The music of Star One is heavier than that of Lucassen's progressive rock/metal opera project Ayreon, drawing influences from 1970s space rock and blending them with modern progressive metal. Lucassen explained that the songwriting was different in that Star One songs are built on guitar riffs whereas Ayreon songs stem primarily off chord arrangements. However, similarities still exist mainly in the song arrangements, the multi-layered vocals, and the use of synthesizers and Hammond organs as part of the main instrumentation.