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In most cases, a sharp raises the pitch of a note one semitone while a flat lowers it one semitone. A natural is used to cancel the effect of a flat or sharp. This system of accidentals operates in conjunction with the key signature, whose effect continues throughout an entire piece, or until another key signature is indicated.
Most of Haydn's symphonies in C major are labelled "festive" and are of a primarily celebratory mood. [1] Wilfrid Mellers believed that Mozart's Symphony No. 41, written in 'white' C major, "represented the triumph of light". [2] (See also List of symphonies in C major.) Many masses and settings of the Te Deum in the
These notes correspond to the white keys on the keyboard of a piano. A key signature with no sharps or flats generally indicates A minor or C major, using all natural notes with no sharps or flats. The natural sign is derived from a square b used to denote B ♮ in medieval music (in contrast with the round b denoting B ♭, which became the ...
Thus, A 0 refers to the first A above C 0 and middle C (the one-line octave's C or simply c′) is denoted as C 4 in SPN. For example, C 4 is one note above B 3, and A 5 is one note above G 5. The octave number is tied to the alphabetic character used to describe the pitch, with the division between note letters ‘B’ and ‘C’, thus:
The distance between two successive notes in a scale is called a scale step. The notes of a scale are numbered by their steps from the first degree of the scale. For example, in a C major scale the first note is C, the second D, the third E and so on.
Letter notation is the most common way of indicating chords for accompaniment, such as guitar chords, for example B ♭ 7. The bass note may be specified after a /, for example C/G is a C major chord with a G bass. Where a capo is indicated, there is little standardisation.
Starting with no sharps or flats (C major), adding the first flat (B ♭) indicates F major; adding the next (E ♭) indicates B ♭ major, and so on, backwards through the circle of fifths. Some keys (such as C ♭ major with seven flats) may be written as an enharmonically equivalent key (B major with five sharps in this case). In rare cases ...
A piece in a major key might modulate up a fifth to the dominant (a common occurrence in Western music), resulting in a new key signature with an additional sharp. If the original key was C-sharp, such a modulation would lead to the theoretical key of G-sharp major (with eight sharps) requiring an F in place of the F ♯. This section could be ...