- The Klein Four【 14 songs in total 】
- Sorted by ＞ Sorted by album (Time) Sorted by song name (Characters) Sorted by other
- Song Lyricist Composer Date
- 1 Abandon Soap(Provided)
- 2 Calculating
- 3 Confuse Me
- 4 Contradiction
- 5 Finite Simple Group (of Order Two)
- 6 Just the Four of Us
- 7 Lemma
- 8 Mathematics Paradise
- 9 Musical Fruitcake (Pass It Around)(Provided)
- 10 Power of One
- 11 Stefanie (The Ballad of Galois)
- 12 Three-Body Problem
- 13 Universal
- 14 XX Potential