What instruments are used in an orchestra and how do they contribute to the overall sound of the ensemble?

In an orchestra, various instruments are used, including strings (like violins and cellos), woodwinds (like flutes and clarinets), brass (like trumpets and trombones), and percussion (like drums and cymbals). Each instrument adds its unique sound and timbre to the ensemble, creating a rich and harmonious blend of tones that contribute to the overall sound of the orchestra.