Jamie Miller grew up in Pontprennau, Cardiff, came third on The Voice in 2017 — Sir Tom Jones didn't even spin his chair — and spent the next seven years playing rooms like The Globe and seriously considering quitting music altogether. Babydoll was released quietly in early August. It didn't explode. It smouldered. The ignition point was Jennifer Love Hewitt posting herself singing along and running the routine on Instagram. From there, the song did what songs almost never do anymore: it spread upward through the celebrity tier rather than downward from it. Alison Hammond danced with Miller until she fell over a boulder and hurt her wrist. Antonio Cipriano recorded a full collaborative version. Miller and Cipriano performed the whole thing on Strictly Come Dancing with the entire cast. The song hit UK No. 1. The dance itself is the mechanism. Start with a chug — right foot down, left knee and heel up, then switch, eight reps, shoulders rolling. Then a lateral step pattern, out-back-out-back on alternating feet, eight more, arms popping. Then the arm-pull with the little finger-click that everyone films themselves getting wrong. It is just complicated enough that learning it feels like an achievement, and just simple enough that your gran can do it at a wedding. That is the exact sweet spot viral choreography has to hit. The song underneath the dance is a breakup anthem with a hook that lands on the first listen: 'If you're gonna leave me broken-hearted / Then maybe, baby, we should just get started.' Miller's voice is clean and earnest, not ironic — which in 2025 is actually a risk. The song does not wink at you. It means it. That sincerity is either the reason it broke through TikTok's cynicism filter or got lucky timing, and it's genuinely hard to separate those two explanations. The Wales angle matters more than it looks like it should. The last Welsh solo male artist to top the UK singles chart was Shakin' Stevens, with a Christmas record, in 1985. Jones never managed it as a solo act by this metric. That's forty years. Miller isn't trading on national identity in the song — there's nothing specifically Welsh about Babydoll — but the cultural context gives the story a durability it wouldn't otherwise have. It is now a fact attached to the song that will travel with it. The honest question is whether Babydoll survives its moment. Dance-craze songs have a specific shelf life problem: the dance is the product, and once everyone has done the dance, the incentive to return to the song drops sharply. The Macarena comparison the article carefully tells you not to make is the right comparison to make privately. That said, the song has a chorus that works without the choreography, and Miller is now a named artist rather than a trivia answer, which is a different starting point for whatever he does next. For now: the chair that didn't spin in 2017 can stay unspun. Miller made it to No. 1 without it.