音符 and 楽譜: Reading Notes, Copying Them, and Using a Score
Compare individual notes read aloud or copied from a board with a score used for performance or secured against wind. Follow the note units, sheet music, and distinct actions.
Notes read individually and copied
音符 (おんぷ) means a musical note. 「楽譜の音符を一つずつ声に出して読んだ。」 — “I read the notes in the score aloud one by one.” The notes were read aloud one by one; this action is not described as performing the entire piece.
「黒板に書かれた音符をノートへ写した。」 — “I copied the musical notes from the board into my notebook.” The notes on the board were copied into a notebook. Copying is the reported action, without identifying the person copying them as their original composer.
A score used for playing or secured against wind
楽譜 (がくふ) means sheet music or a score. 「楽譜を見ながら初めての曲をゆっくり演奏した。」 — “I slowly played an unfamiliar piece while reading the score.” The example reports slowly playing an unfamiliar piece while reading its score.
「風で楽譜がめくれないよう端を留めた。」 — “I secured the edge of the sheet music so the wind would not turn the pages.” The edge of the sheet music was secured so the wind would not turn the pages. めくれないよう expresses the purpose of securing it, rather than a result in which the wind disappeared.
Note units and actions involving the score
音符 identifies individual units read or copied from the board. 楽譜 identifies the score used for performance or the sheet music whose edge was secured. Follow the object of each action instead of treating the words as the same musical unit.
Reading, copying, playing, and securing are distinct actions. Copying notes is not described as composing a new piece, and playing one unfamiliar piece with a score does not establish mastery of every score.
Does 「黒板に書かれた音符をノートへ写した。」 mean that a new piece was composed?
Show the answer and why
No. It describes copying the notes written on the board into a notebook. Keep that action distinct from performing while reading a score or securing sheet music against wind, without identifying the person copying the notes as their original composer.