From Cardi B and Megan Thee Stallion's "WAP" to concerns over voting for Joe Biden, here's where the biggest TikTok sounds of the year originated.

While words and sounds can also pop into our head, they are less likely to echo there than songs, which tend to have a repetitive structure and looping motifs.

From Cardi B and Megan Thee Stallion's "WAP" to concerns over voting for Joe Biden, here's where the biggest TikTok sounds of the year originated.

There’s something timeless about a song that sounds like a train—and feels like one too. In this video, we explore why train ...