Today's digital metronomes are more complex than the old wind-up kind and as a result they can cause some confusion (IMO). Basically, the metronome is meant to do one thing: It clicks at a specific rate - such as 120 clicks per minute, or 2 clicks per second. That tells you how fast to play the tune and helps you keep tempo. That's it. The newer metronomes have a wider variety of sounds, and can be helpful in certain ways like playing the first beat of the measure (down beat) louder than the rest. As in, "ONE, two, three, four, ONE, two, three, four, etc.". The metronome is not intended to play a click for every note in the song. If the song is in 4/4 time, it means that there are four beats in each measure (the top number) and the QUARTER-note (the bottom number) is equal to exactly ONE of those beats. If you have eighth notes in the song, you would play TWO eighth-notes per beat. For 16th notes, you would play FOUR per beat. A half note would equal two beats, and a whole note would equal four. Hope this makes sense.