参考资料 · 视唱练耳与音乐理论
Accidentals temporarily change a note. A sharp raises it by a half step, a flat lowers it by a half step, and a natural cancels an earlier alteration.
When a note goes beyond the five staff lines, short ledger lines extend the same sequence of scale degrees above or below the staff.
A staff has five horizontal lines and four spaces. The position of a notehead shows its pitch inside the chosen clef.
The clef at the start of a staff sets landmarks for every following note. Middle C connects both halves of the piano staff.
The grand staff joins treble and bass clefs. The upper staff is usually played by the right hand and the lower staff by the left hand.
Seven note names repeat across octaves. Use groups of two and three black keys to locate C quickly.
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