A bar (or a measure) is created when you divide the stave into different sections with bar lines. These spaces between the bar lines on the stave are the bars, and they all have the same rhythmic lengths. There are different types of bar lines, as shown below:

• Single bar lines show the end (or beginning) of one bar, and do not impact your performance as a musician.
• Double bar lines show the end of one section in a piece of music; you play through these like single bar lines.
• Final bar lines demonstrate the end of the piece of music that you’re playing.
• Repeat bar lines look identical to final bar lines, however they also have a colon on one, or both, of their sides.

Start and end repeat bar lines show you where to repeat a section of music. Unless stated otherwise, you only repeat that section of music once, then play through the end repeat bar as if it’s a single. If you see an end repeat bar line by itself, this means that you have to go to the beginning of the piece and repeat from there.

The value of the bars are dictated by the time signatures. To find out about these, subscribe and read on…

Image: https://www.musicnotes.com/now/omg/12-cringeworthy-music-puns/