The "string section" refers to a group of musicians in an orchestra or ensemble who play string instruments, such as violins, violas, cellos, and double basses. This section is essential for creating harmony and texture in orchestral music, as string instruments can produce a wide range of tones and dynamics. Typically, the string section is divided into first and second violins, with the first violins often playing the melody. The viola adds depth, while the cello and double bass provide the bass line. Together, they contribute to the overall sound and emotional impact of the music.