When you put together these two instruments, it would resemble the diatonic button accordions which are still made in modern times. As time has passed, many keyboard and buttonboard systems were developed. Now, accordions have the ability to switch with ease between two voices and are constructed in various methods to increase durability and stability. It also has a gourd resonating cavity and an extensive hollow neck. The sitar came into the western musical industry when Pandit Ravi Shankar used it in his works. Following this, The Rolling Stones also put the sitar into action in the song Paint It, Black. Origin The sitars came from the Indo-Pakistan subcontinent during the late Mogul era. It is sometimes referred to as double virginals. The clavicytherium has its strings and soundboard placed perpendicularly in front of the player just like the upright piano. On the other hand, the spinet has its strings set at a 30 degree angle from the keyboard. The folding harpsichord is the version of the harpsichord that is suitable for travel. Chinese flute The Chinese flute, also referred to as di, have many varieties with diverse sizes, number of holes, intonations, and structures. The majority of di are made of bamboo. The distinct characteristic of Chinese flutes is the membrane on one of the holes that vibrates with the air inside. This causes the flute to have an intense and bright sound. In the middle of the 1920 s, the tenor had 19 frets and was twenty-two to twenty-three inches long. The rarest type is the cello banjo. It has the same range as the mandocello and cello and is tuned one octave lower than the tenor banjo. Four-string banjos can be for choral accompaniment and single string tune playing. These were also for assembling leaders and for announcing marching commands in camp. The bugle developed further from its military foundation in the bugle and drum corps. Typically, it is pitched in G or B flat. There are usually mellophones placed in B flat brass lines which make tuning easy. Boy Scout troops also use the bugle.