The contrabass, also known as the double bass, is the largest and lowest-pitched string instrument in the orchestral family. It typically has four strings, tuned in perfect fourths, and is played with a bow or by plucking the strings. The instrument is essential in various music genres, including classical, jazz, and folk. Contrabasses are made from wood and have a hollow body that amplifies sound. They can be played in different positions, either standing or seated, and are often used to provide the bassline in ensembles. The instrument's rich, deep tones contribute significantly to the overall harmony of a musical piece.