Woodwind: When playing a recorder, the wind you blow into the instrument and against an edge and creates the note. The note created depends on the placement of the fingers along the holes.
Brass: In this video, he produces sound by vibration of air
in a tubular resonator using the players lips to produce the vibration.
Strings: your fingers must pluck, strike, or rub the strings to produce sound or use a bow. In this video, that is what he is using.
Percussion: they are sounded by being struck
or scraped by a beater; struck, scraped or rubbed by hand; or struck against
another similar instrument. In this video, he uses a stick to hit against the drums produce the sound.