update: I tried with all my songs and yes I know it doesn't work with every song. I just think it works if you play the song on time or it works with some sort of upbeat song. But yea, it doesn't work perfectly like you would expect.
This is obvious. If you put your number in as a variable and work it out you can see the steps. If you read into more than just doing it these all come out by adding numbers. Yeah you could do this wth any number and it Xs two