Plauta is an musical instrument and it is all over made by spain all of it are actually made of bamboo.
OH-boh are a family of double reed woodwind musical instruments. The most common oboe plays in the treble or soprano range. Oboes are usually made of wood, but there are also oboes made of synthetic materials.
VIolin :a stringed musical instrument of treble pitch, played with a horsehair bow. The classical European violin was developed in the 16th century. It has four strings and a body of characteristic rounded shape, narrowed at the middle and with two f-shaped sound holes.
Viola: an instrument of the violin family, larger than the violin and tuned a fifth lower.