|posted: 3/27/2006 at 8:25:01 PM ET|
Because they are similar. For example, the violin, viola, cello and string bass are all string instruments, then there are the brass instruments: tuba, trumpet, trombone, etc. There are the woodwinds: flute, oboe bassoon etc and the percussion section snare, tympany, cymbals, tambourine, claves etc. The instruments in these sections are related in how they are made and played.
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