The song played over the closing credits of season 8, episode 2 on Sunday.

Florence + The Machine’s special Game of Thrones track “Jenny of Oldstones” has been burning up the Shazam charts.

The music recognition app got a workout during season 8, episode 2 of the HBO fantasy series on Sunday when the song -- named after a legendary character first introduced in George R. R. Martin’s Song of Ice and Fire novels -- played over the show’s closing credits. According to the company, it took less than 48 hours from the episode’s original airing for the tune to enter Shazam’s Worldwide Top 10 chart at No. 6.

"Jenny of Oldstones" also set a record as the most Shazamed track ever in the first 24 hours after release, having been Shazamed over 300,000 times since the episode aired on Sunday night. The previous record was held by Adele's 2015 single "Hello," which was Shazamed over 200,000 times in its first 24 hours.

The track, which became the most Shazamed song in 126 countries on April 22, also hit the No. 1 position in six countries, charted in the top five in 32 countries and reached the top 10 in 55 countries. Shazam notes that it was most popular on the service in the U.S., Great Britain, France, Spain and Russia.

As of Tuesday (April 23), "Jenny of Oldstones" sits at No. 1 in China and Brazil; No. 2 in Argentina; No. 4 in Spain; No. 5 in the U.K.; No. 8 in the U.S. and Canada; and No. 9 in Mexico.

The lyrics to “Jenny of Oldstones” were written specifically for the episode, with only the opening line -- “High in the halls of the kings who are gone, Jenny would dance with her ghosts” -- having been featured in the books (where it was simply called “Jenny’s Song”). In addition to Florence + The Machine’s version, the song was sung within the episode by the character Podrick Payne (Daniel Portman).

The company notes that U.S. viewers can Shazam the latest Game of Thrones episodes to access specific content from the series on Apple Music, TV, Books and Podcasts, including soundtracks from the series, Game of Thrones-inspired playlists, past episodes and more.

This story has been updated to reflect "Jenny of Oldstones" 24-hour record.