The 4/4 time signature is one of the most common time signatures in music. It indicates that there are four beats in each measure, and each beat is represented by a quarter note. This means that when you count the beats, you can say "1, 2, 3, 4" for each measure, making it easy to follow along with the rhythm. In 4/4 time, the music often feels steady and balanced, which is why it's frequently used in various genres, from classical to pop. Many popular songs, like those by The Beatles or Taylor Swift, are written in this time signature, making it familiar to listeners and musicians alike.