Complex sentence: All forms of instruments create vibrations in order to produce sound waves that make the music, which is essentially organized sound, and guitars are a type of musical instrument called a string instrument, meaning that they create their sound through the vibrations of a string.
Split into simpler sentences: All forms of instruments create vibrations in order to produce the sound waves that make music, which is essentially organized sound. Guitars are a type of musical instrument called a string instrument, meaning that they create their sound through the vibrations of a string.