Thanks to geeking out on Evangellion I recently stumbled upon this classic Japanese song called 365-step March.
This song is appears in EVANGELION:2.0 YOU CAN (NOT) ADVANCE when the new character Mari is fighting an Angel near the beginning of the movie. Being the crazy character that she is, Mari sings this song as she rides into battle.
三百六十五歩のマーチ by 水前寺清子
365-step March by Suizenji Kiyoko 水前寺清子 (すいぜんじ きよこ)
You can sing along by watching this video some people decided to take in a Karaoke bar.
Here is another clip from 2005.
This is one of those songs that literally everyone who grew up in Japan knows, so it’s a good chunk of knowledge to add to your Japanese culture database.