- "Grain", the series opening, has to be one of the best themes for any series.
- "It's a Long Way to Go" plays in the truly uplifting moments, where the very noblest traits of humanity are shown.
- The ending themes are great too. "For the Love of Life" fits Johan perfectly, whereas "Make It Home" seems to fit Tenma very well.
- "Twin" can give anyone claustrophobia.
- "Nacht Tour" sounds remarkably like it was written by Tom Waits.
Awesome Music / Monster
Monster's OST has an incredibly atmospheric soundtrack that just elevates the tension in every episode.