01011001 Trivias

"01011001" is the binary form of the number 89, which is the ASCII code for the letter 'Y'. 01011001's plot is tied to the "Planet Y" and "Forever of the Stars" storyline developed in the albums Into the Electric Castle, The Universal Migrator and The Human Equation.
Of the vocalists, only Anneke van Giersbergen, Floor Jansen, and Arjen himself have sung on previous Ayreon albums: Anneke on Into the Electric Castle, Floor singing backing vocals on The Dream Sequencer, and Arjen on every Ayreon album, except Flight of the Migrator.