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 a measure can contain four quarter notes, two half notes, or any combination that adds up to four beats. In musical notation, the 4/4 time signature is often represented by a "C" symbol, which stands for "common time." This time signature provides a steady and even rhythm, making it easy for musicians to play together and for listeners to follow the music.