Anime OSTs you immediately looked up & loved?

You know that feeling when a scene is playing, or the credits start rolling, and the music is just so incredibly good that you immediately pull out Shazam or pause the episode to look up the OST? ​I'm trying to expand my daily playlist and want to know which anime movie or series tracks had you scrambling to find the title and artist. ​Here are the ones that instantly hooked me: ​• Rising Tide by Shuntaro Okino (Gun x Sword) ​• Good Night by Hikaru Utada (Penguin Highway) ​• Slow Dance by Suneohair (Say "I Love You") ​What are yours? Drop your favorites below so I can give them a listen!