1. Piano

A keyboard instrument in Western classical music, it is known as the "King of Instruments". It consists of 88 keys (52 white keys, 36 black keys) and a metal string soundboard.

2. Violin

A string instrument. There are always four strings. The sound is produced by the friction between the string and the bow. The violin body (singing box) is about 35.5 cm long and is made of curved panels, back panels and side panels.

3. Viola

The mid-range instrument in the violin family has basically the same appearance and structure as the violin, but is slightly larger. The tunings in fifths are c, g, d1, and a1, and the length of the piano body is generally 42.5 cm. The tone of the viola is thicker, warmer and fuller than that of the violin, and the fingering and bowing are basically the same as those of the violin.

4. The cello is a Western musical instrument. It is an essential tenor or bass string instrument in the orchestra. It is a lower middle-range instrument in the violin family of instruments. The cello has a rich and rich tone and a cheerful personality. It is good at playing lyrical melodies and expressing deep and complex emotions. It also plays the bass part of the harmony together with the double bass, so it is known as the "lady of music".

5. Double bass

A string instrument that plays strings. Also known as double cello. The largest and lowest-sounding bowed string instrument in the violin family. It is the backbone of the sound in the band and the basis of basic rhythm. The double bass is about 180 to 220 centimeters high, with a pillar at the lower end, shaped like a cello.

6. Saxophone

The saxophone was invented in 1840 by the Belgian Antoine-Joseph Sax (1814-1894). Adolf was a keen instrument maker, specializing in clarinet and flute playing.