Trappist System Trio's debut album 'Arrival' is a guitar-driven progressive rock album with clear and emphatic vocals. The album starts with the long 'The Enlightened' and is followed by shorter songs that are full of ideas. The band keeps it simple with guitar, bass, and drums, occasionally adding session musicians for keyboards and bass clarinet. The album has a mid-Nineties German prog metal flair and is reminiscent of mid-era Sieges Even and Prklz.