This instrument is like a huge cello and is played the same way, by rubbing the bow across the strings. Another way of playing it is by plucking or striking the strings. Double bass can be played while standing up or sitting down and is suitable for kids 11 years and older. It also comes in various sizes from full size, 3/4, 1/2 and smaller. The double bass isn't as popular as other string instruments but is essential in most kinds of ensemble especially jazz bands.