Pure copper has exceptionally high thermal and electrical conductivity; it is easily cut, bent and formed, but it is too soft for many uses. Alloying copper with other metals provides many of the most important alloys that are used today. The best known alloys are brass and bronze, which have been used for thousands of years.
Bronze in Music
You may have heard of the brass section in an orchestra, which includes trumpets, horns and trombones. Brass is an alloy of copper and zinc. There is effectively a 'bronze section' too, since bronze is widely used in percussion.
Bronze is an alloy of copper and tin used for making bells, cymbals and gongs. This type of bronze is called 'bell metal'. Other bronzes are used in piano and guitar strings.
The best cymbals are cast from bronze, then rolled, pressed into shape and hammered to create unique sound quality. One of the most famous cymbal makers was Avedis Zildjian, who made cymbals in the early seventeenth century in Constantinople. The Zildjian company is now based in the USA and is one of the oldest private companies in history. See the How it's Made: Cymbals
This is an oscilloscope trace from an iPhone app. It shows loudness against time. Pure frequencies produce smooth lines. This is a human voice singing a note.
This is a frequency spectrum for a musical instrument. You can see a main peak at 500 Hz, but there are other peaks (called harmonics). This graph is from an iPhone app called Spectrum View + by Oxford Wave Research.