It is a reedless wind instrument, otherwise known as an aerophone, which creates sound from the flow of air from an opening. Flutes are often made of wood in Europe while silver is the main flute construction material in the United States. Theobald Boehm invented the modern flute. He created a bowl-shaped head connected to a cylindrical center with large finger holes and open-standing keys. One reed is sharper and one is a bit flat which creates the tremolo effect when vibrating together. Harmonica care Do not eat or drink while playing your harmonica and clean your mouth thoroughly before playing. Gently tap the harmonica every after playing to remove excess saliva and keep it in a box or case when not in use to avoid accumulation of dirt. The tube, 2.79 m (9 ft 2 in) long, is bent to make a height of 1.22 m (4 ft) and consists of a metal crook on which the reed is placed and four sections of maple or pearwood: the tenor, the butt, the bass, and the bell. Bassoons in modern ensembles Two bassoons are typically required in today s symphony orchestra with the first used in solo passages. There are bagpipes widely spread throughout Middle East and Europe. Even though there was a drastic decline of the other kinds, there was a revival in more recent times. For example, the Irish piping declined in the mid 1900 s but came back and is still alive today. Other types are the Balkan Gaida, Pastoral pipes, Galician gaita, Breton Biniou, the Aragonese Gaita de boto, Scottish smallpipes, and many more. There are times that the player has to cut a note by releasing a key just before it completes its full sound. There are also instances wherein the player has to omit a note but this is quite rare. Thus, skill and technique is needed when consecutively playing fretted notes because there is a big chance of producing unwanted sound when overlaps happen. Crumhorns are meant to copy the vocal quartet with bass, tenor, soprano, and alto. It has pitches in F and C. The instrument has a naturally sharp sound that gives a good effect in the modern ensemble. The tone which is from nasal humming to rich buzzing depends on the way their reeds are voiced. Structure Crumhorns are made of wood which was hollowed, packed with sand, and closed.