Connie Francis, 87, was surprised to learn her 1962 song “Pretty Little Baby” is having a massive resurgence, going viral on TikTok—even if she had to ask what exactly that meant. Sixty-three years after she recorded the track, it’s become a huge hit on TikTok, where even celebrities like Kylie Jenner have recorded lip-sync videos.

Overall, “Pretty Little Baby” has been used in nearly 15 million TikToks this year, and has been streamed over 20 million times on Spotify. “My thanks to TikTok and its members for the wonderful, and oh so unexpected, reception given to my 1961 recording ‘Pretty Little Baby,’” said Francis in a statement posted to her Facebook page.