Because a reader recently asked, I have sorted it out myself. If there are any omissions, you can remind me.
Volume 1
Chapter 15 Farewell, the lyrics are magically changed to the ending song of the animation RWBY, "wings". [Life is not that long...]
Chapter 76 The breeze blows, which is the episode of the animation AIR, "Bird Poetry". [That little bird can't spread its wings yet and fly]
Chapter 93: Thor's Genealogy, using the song "Thor's Genealogy" by the fantasy band Sound Horizon. [After the death of the one-armed hero who saved the world]
Chapter 112: Burning camellias, the music sung by the Herris family arborists, is taken from "Starvation" by the Bulgarian Chorus.
In the initial overture of Chapter 132, the protagonist plays "Prelude (Motohiko Hirami & Yann)". Because there are many versions of Prelude, the player in brackets is specially indicated.
Chapter 133: The legend is unveiled. The main character sings the song "A Letter" from Mobile Suit Gundam UC on the stage. [My friends have all left, so I can only sing this song alone. ]
Chapter 137: Sunlight, this is the ending theme of the children's cartoon, "Xiaguang". [The moonlight illuminates the sky]
Volume 2
Chapter 36 Road to Glory, this is the theme song of Dragon Nest, "Road to Glory~for Dragon Nest" (Road to Glory) sung by KOKIA. [The wind is calling towards the journey to the future]
Chapter 61: Thinking alone under the moonlight, the protagonist is humming a fan song by Touhou Project, "Libertus". [Being able to become so strong is something I have never imagined in my life]
Chapter 94: Piano Sound and Poetry, the protagonist plays the song "Gently As She Goes" from the Nordic epic "Beowulf". [Lip, as round as a June berry]
Chapter 101: Wonderland in Fairy Tales, the song is a fan song by Oriental Project, "fairy stage". [It's about to begin, the world is moving at night]
Chapter 144 The Golden Diva, the song is "Star Sky" by Two Steps From Hell. [We are here, flying in the sky]
Chapter 162: The Song of Holy White, the protagonist hums "Insects Flying" to Keti
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For the above songs, I built a playlist in NetEase Cloud, which is the music quoted in "I'm Not a Witch"