Middle C on a piano keyboard, learning aid and cheat sheet. Diagram of two octave sections, for treble clef and bass clef, on keyboard and grand staff, the Middle C in red color. Illustration. Vector. Poster #447268404
Middle C on a piano keyboard, learning aid and cheat sheet. Diagram of two octave sections, for treble clef and bass clef, on keyboard and grand staff, the Middle C in red color. Illustration. Vector. Poster #447268404
