The term "second violin" refers to a section of violins in an orchestra or string ensemble that plays harmonies and supporting melodies, as opposed to the first violins, which typically carry the main melody. The second violins often provide depth and richness to the overall sound, complementing the first violins and other instruments. In a standard orchestral setup, the second violins are usually positioned opposite the first violins, creating a balanced sound. This section is essential for achieving a full and harmonious blend in compositions by composers like Ludwig van Beethoven and Wolfgang Amadeus Mozart.