Kagakusha no Noumiso

(Brains of a Scientist?) is a musical composition from the Nichijou soundtrack, notable as it is essentially Kana Nakamura's theme: every scene in which it is used features Nakamura-sensei. It was used in Episodes 15 (both Part 60 and Short Circuit-kun), 16 (Prelude), 17 (Behind the Gymnasium Parts 1&2), 18 (Nakamura-sensei), 21 (Part 90), 24 (Nakamura-sensei Part 2), 25 (Part 108), and 26 (an untitled scene where Nakamura runs into Nano while chasing Sakamoto).

It is also notable as it appears to feature a harpsichord.