Sorry, not sure if this is the best place to ask this.
The OST track starts out with a long whistle, followed by quick whistles blows, and it was quite fast (not slow/sad) (kinda had a sporty feel?).
The whistle sound effect sounded a lot like the one in the background of this OST track: https://www.youtube.com/watch?v=VGWlk745yr0
I recalled it was from the Toaru Majutsu/Railgun Series, but i might be recalling wrongly, so if you know of a OST track that sounds similar, please let me know.