How to Find & Identify Anime Opening and Ending Songs

You heard a song — maybe in a clip, maybe from a friend's playlist — and you're sure it's from an anime, but you don't know which one. Or you just finished a show and want to track down that ending theme that's been stuck in your head. Here's how OP/ED culture works, and how to actually find what you're looking for.

What are OPs and EDs, exactly?

Almost every TV anime has a dedicated opening theme (OP) that plays before the episode and a closing theme (ED) that plays after — usually 60–90 seconds each, with their own original animation sequence separate from the show itself. Longer series often get a new OP or ED every 12–26 episodes (a new "cour"), which is why you'll see entries like "OP2" or "ED3" on an anime's page — they're not remixes, they're entirely different songs and sequences tied to a specific episode range.

Labels and artists take OP/ED placements seriously — a song landing as the opening of a hit series is a real commercial event in Japan, which is part of why the visual sequences are so polished and why so many are performed by well-known J-pop, rock, and vocaloid-adjacent artists rather than being scored in-house.

How to identify a song's source anime

1. Search gaku.moe directly. If you know any part of the anime's title, a studio name, or even just the genre, start on the search page — it indexes titles, Japanese titles, genres, and studios together.
2. Use a song-recognition app on the clip itself. Apps like Shazam or SoundHound can identify the track from audio alone, which gives you the song title and artist — from there, searching "{song title} anime" almost always surfaces the source series.
3. Check the visual style if you have the video. OP/ED sequences are usually distinct enough in art style and character designs that a reverse image search on a paused frame, or just recognizing the studio's house style, can narrow it down fast.
4. Search the lyrics. Even a few remembered words, searched alongside "anime opening" or "anime ending," will often turn up the answer — lyric databases index most officially released theme songs.

Browsing by what you already know

If you know the show but not the song, every anime page lists every OP and ED it has on record, in order, with the song title, performing artist, and an embedded video where one is available. If you know the vibe you're after — a specific genre, studio, or era — the browse page lets you filter by genre and status and sort by score or release year, which is a good way to find shows (and their theme songs) you haven't heard yet.