What is the accordion course?

Commonly used accordions are divided into two types from the external structure: one is keyboard accordion and the other is button accordion. Whether it is a keyboard accordion or a button accordion, its external structure mainly includes the keyboard (or button) of the right hand, the middle bellows and the button part of the left hand.

The right hand part of the keyboard accordion is arranged according to the average semitone relationship of 12, which is divided into two rows of keys, black and white, and the adjacent two keys have a second interval relationship. Phoneme arrangement of right-hand keyboard, keyboard grouping, accordion specification and range, etc.

The left-hand bass button of the accordion is also called bass.

Take 120 bass as an example. The left-hand bass part has six rows. The first row is auxiliary bass (also called contrapuntal bass), the second row is basic bass (also called basic bass), the third row is major triad, the fourth row is minor chord, the fifth row is seventh chord and the sixth row is negative seventh chord.

Voice changer is a unique device of accordion, which is divided into right-handed voice changer and left-handed voice changer. Players can change the timbre to control the volume, raise or lower the range according to the needs of music emotional expression, so as to achieve perfect sound effect.