Machine Design or Mechanical Design. This is the series of articles on Machine Design or Mechanical Design. Machine design and drawing are very important subjects of mechanical engineering. No produce can be manufactured without designing it.
Bassoons are usually made from maple wood. Like the oboe the bassoon is played with a double reed. To make a sound the player blows through the double reed which is attached to a crook leading into the main body of the instrument. Bassoon players change the pitch of the notes by pressing different combinations of keys.
The violin, viola, cello, and double bass make up the family of  bowed string instruments. The bow is usually made of horse tail  hair stretched over a wood frame, and rosin (a solid resin  extracted from pine trees) is applied to the hair so that it has  sufficient friction to vibrate the strings. Like the guitar and  harpsichord, the strings on bowed instruments can also be plucked.