Piano
A piano is an instrument with a stringed keyboard in which the strings struck by wooden hammers are covered with a softer material. The piano is played through a keyboard in which the keys are arranged in a horizontal row, whereby the player presses down or strikes with the force of the fingers of both hands to cause the hammers to strike the strings. The piano was invented in Italy by Bartolomeo Cristofori around 1700.
Violin
Violin is the smallest and highest-pitched instrument in the violin family. The instrument consists of four strings, each of which is spaced exactly five intervals apart. The violin was developed in 16th century Italy and continued to be improved throughout the 18th and 19th centuries. Adult violins are about 60 cm long, about 20 cm wide, and always come with a bow with a bow. The rope is made of horsehair, more advanced types can be made of whale fins but today are often made of chemical nylon with greater elasticity and usability. The guitar is made from different types of wood such as maple, spruce... while the strings are made of steel or nylon. 
Trumpet
The trumpet is the highest-sounding brass instrument in the ensemble. Trumpet is one of the oldest musical instruments, used since 1500 BC. The trumpet is played by blowing a stream of air through the mouth, which creates a sounding effect, creating a standing wave oscillation in the column of air inside the trumpet. Since the late 15th century trumpets have been constructed mainly from copper pipes, often bent twice into a circular spiral almost rectangular.