Case Studies
What do YouTube comments reveal about how your music is actually being heard?
YouTube comments are some of the most detailed, least-used fan data an artist has. Music Data Analysis Lab reads through them and turns them into findings — not just what people are saying, but what that reveals about how a song is being heard. Below are three analyses we've published in full.
Plastic Love
In the top 500 comments we analyzed, most of the conversation isn't in Japanese at all.
76.2%of the 500 comments analyzed contain no Japanese text.
Key insight
The most common reaction isn’t “I just found this” — it’s “I remember this.” Overseas listeners describe the song as something rediscovered, not something new.
Shinunoga E-Wa
Fujii Kaze's “Shinunoga E-Wa” is sung entirely in Japanese. Its comment section tells a different story.
69%of the 500 comments analyzed use Latin/English script, compared to 28% in Japanese.
Key insight
One phrase kept surfacing in the comments: “Understanding 0%, Vibe 100%.” Listeners connect with the feel of the song even without understanding the words.
Bon Jovi × Bon Odori
A video pairing Bon Jovi's “Livin' On A Prayer” with a traditional Japanese Bon Odori dance caught on in Japan. We read the comments to see who was watching, and what they wanted.
8.4%of commenters explicitly say they hope Jon Bon Jovi himself sees the video.
Key insight
The comment themes are overwhelmingly local — praise for the dancers, hope it keeps going in their own town — alongside one clear ask: for Jon Bon Jovi himself to see it. It reads as a Japanese audience proud of a local moment, not an international viral spread.
What We Look For
Audience
Who is actually watching and commenting — casual listeners, longtime fans, or people finding the song for the first time.
Language
What language the conversation happens in, and what that reveals about where a song is really connecting.
Themes
What comes up again and again — a memory, a lyric, a moment in the video — and how often.
Action
What an artist, label, or team can realistically do with what the comments show.
What These Case Studies Show
These three songs have almost nothing in common — a 1984 city pop track, a Japanese-language ballad, and a hard rock anthem paired with a folk dance. But in each case, the comments showed us something view counts and chart positions couldn’t: who was actually listening, what language they were reacting in, and what that revealed about how the song was traveling.
That’s the value of comment data. It isn’t just a record of what people are saying — it’s a record of who found the song, how they found it, and what they want next.
Interested in what your audience is saying? See how the analysis works →