The first musical instrument was the shepherd's pipe, which was invented by Pan. Early humans also discovered percussion instruments. The document discusses how music is an important part of the school community and brings people happiness. It then describes the different musical instruments the author's family members can play, including guitar, piano, violin, ukulele. The author concludes by saying they enjoy learning new instruments because it makes them happy and is a challenge, encouraging others to learn an instrument or listen to more music.