For the version of this song with vocals, see Diary wa Fortissimo.
Diary wa Fortissimo (Instrumental)
K-ON!! Character Image Songs Tsumugi
English Name Fortissimo Diary
Album K-ON!! Character Image Songs: Tsumugi Kotobuki
Performed By Tsumugi Kotobuki
Release November 17, 2010
Genre J-Pop, Anime Song
Label Pony Canyon
Previous Come with Me!! (Tsumugi Ver.)
Next Yasei no Jounetsu (Instrumental)

Diary wa Fortissimo (Instrumental) is the instrumental version of Tsumugi Kotobuki's song "Diary wa Fortissimo", produced by Pony Canyon and published on 17 November 2010 within Tsumugi's Character Image Songs album.

The song was written by Shouko Ohmori, composed by Susumu Kawaguchi and arranged by Shigeo Komori.

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