C tone (connected to the horn line) D tone (connected to the horn line) E tone (connected to the horn line) F tone (connected to the horn line) G tone (connected to the horn line) C tone (all elements
Application scenarios:
Professional quasi-professional students practice
Applicable to the crowd:
Middle school children Women adult elderly
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Items weight estimation 0 g, subject to actual weight
Calculated shipping includes heavy logistics. Order more, shipping costs will reduce
to 50% discounts!
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