The small electroacoustic band is composed of four instruments: drums, electric guitar, electric bass, and electronic synthesizer.

1. Drum set: Formed in the 1940s, it includes various types of hand and foot percussion instruments with different timbres. Hand percussion instruments include snare drums, toms, and cymbals, while foot percussion instruments include bass drums and hi-hats, which are indispensable for small electroacoustic bands.

2. Electric guitar: Electric guitar is a product of modern science and technology. It is obviously different from traditional guitar in appearance and sound. The body of the instrument is made of new hardwood and is equipped with devices such as volume and pitch adjusters (buttons) and vibrato structures (rockers). Coupled with the use of effects, the electric guitar has strong expressive power and plays an important role in modern music. It is mostly used for song accompaniment of small electroacoustic bands.

3. Electric bass: The electric bass is composed of headstock, neck, piano box, strings, effects, pickups, etc. It is mainly used in modern small electroacoustic bands as the entire The bass part of the band often uses broken chord accompaniment. In the passage of the music, the electric bass often plays a transitional melody, which can greatly enrich the timbre of the small electric band.

4. Electronic synthesizer: Electronic music synthesizer, also referred to as electronic synthesizer, is an electronic device that uses electronic equipment to replace the band for performance and automatic arrangement. There are many ways to use synthesizers to produce sounds. First, you connect several sine wave oscillators together and change their frequencies and amplitudes to produce different timbres.

5. An electroacoustic band refers to a band mainly composed of electronic instruments, also called an electronic band. Mostly electronic rock. Electronic musical instruments refer to musical instruments that use electronic components to produce and modify sound. In the 1930s, as early as 1938, some musicians in the United States tried to develop semi-electronic instruments, electronic violins and electronic cellos. In the 1960s, electric guitars were used in rock bands in the United States and popular music bands in other countries around the world. Electric basses, electronic keyboards, synthesizers and drums were gradually added to form electroacoustic bands.