Rain is a natural phenomenon caused by the condensation of water vapor in the atmosphere, and it does not have a specific rhythm or pattern. While rain can be used as a source of inspiration for music, it is not a defining characteristic or rhythm of pop music.

Pop music, on the other hand, is a genre characterized by various musical elements such as catchy melodies, simple harmonies, repetitive beats, and lyrics focusing on relatable themes and emotions. The rhythm of pop music is typically steady, danceable, and designed to appeal to a wide audience.

So while pop music can incorporate different sounds, rhythms, and influences from various sources, it does not inherently have a rhythm of rain.