Musical note standardised at 440 Hz, lying in the octave containing notes from C (middle C) to B. The lowest note on most pianos is A, the highest C. The MIDI system for electronic musical instruments and computers uses a straight count starting with note 0 for C at 8.1758 Hz up to note 127 for G at 12,544 Hz. A written note can also have a note value, a code that determines the note's relative duration. In order of halving duration, they are: double note (breve); whole note (semibreve); half note (minim); quarter note (crotchet); eighth note (quaver); sixteenth note (semiquaver).;
Dotted note indicates, a practice known as over-dotting. If the note to be dotted is on a space, the dot also goes on the space, while if the note is on a line, the dot goes on the space above (this also goes for notes on ledger lines). </score> The placement of dots gets more complicated for adjacent-note chords and for lower voices, as shown below. </score> The dots on dotted notes, which are located to the right of the note, should not be confused with the dots for staccato articulation, which are located above or below the note. Theoretically, any note