What is the time signature of 7/4 and how is it different from more common time signatures like 4/4 or 3/4?

The time signature of 7/4 means there are 7 beats in each measure, with the quarter note receiving one beat. This time signature is different from more common ones like 4/4 or 3/4 because it has an irregular number of beats per measure, which can create a unique rhythmic feel in music.