Let us count the ways ...

In Time magazine, writer Ada Calhoun analyzes why so many babies on YouTube are getting down to Beyoncé's "Single Ladies (Put a Ring on It)" video.

Here's what she found:

• "The song is very Teletubbies," says Tony-nominated musician Kenny Mellman. "If you listen to it, there is very little music. It's all drum and Beyoncé's voice."

• Kara Shall, communications director of Baby Loves Disco, says, "Young children love songs with good rhythm and repetition, and 'Single Ladies' certainly has both."

• Babies love high-contrast colors, steady beats, and smiling women's faces. "Single Ladies" has all three.

Why do YOU think babies love the Beyoncé song? Comment below.