The B-flat (BB) chord of the electronic piano is composed of b7, 2 and 4, which can be played simultaneously with the left hand in the accompaniment area. Three or more sounds are vertically combined according to the relationship of three-degree superposition, which becomes a chord. There are usually three chords, seven chords, nine chords and other concepts.

Electronic organ is one of the reasons why it is loved by music lovers because of its portability. Therefore, attention should be paid to avoid rain erosion and external impact when handling, and special piano covers and boxes should be used for protection.

Develop the good habit of washing hands and manicure before and after playing the electronic piano, and keep the electronic piano clean and personal hygiene. Don't eat or drink water during playing the piano to avoid food and water entering the gap between the keys. Don't put heavy objects on the keys and keys, lest the keys fail.

When the electronic organ is not used for a long time, unplug the power supply and take out the battery (if any) in the electronic organ to prevent the battery liquid from leaking and damaging the circuit board. Reset the function keys and switches on the electronic organ. Put the piano in the box.

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