I have some time to kill so I thought I would write a brief overview of the concept of time signature in response to some questions that arose recently from non-musicians.

Just a word, this post was originally submitted to a long-ago fan club email list for an older musician, hence many uses of music from the '60s and '70s as examples, most especially The Beatles, who often kept things both simple enough to be clear, but interesting enough to be useful and well-known examples. That's just how it is.

PART 1: A Young Person's Guide To Common Time Signatures, and what they mean in real life

Ok. When you listen to a song, it has a beat. This is what you tap your feet to, or maybe drum your fingers on a desk.

The most common beat in rock and roll might be written something like this. "boom-boom-BOMP-bum, boom-boom-BOMP-bum,…