The complimentary song to Aetherspace, Alpaether was meant to be used in the final level of 'Archtype' but never came to fruition due to time constraints. The song was finished well before the level, though. It is a higher paced version of the original song, giving a sense of escalation of difficulty and urgency. This was also made using pxtone.
All this song is my own, to the best of my knowledge. References my own song, Aetherscape.