hidden octaves

Explanation and definition An octave is the interval between one musical pitch and another with double or half its frequency. For example, if one note has a frequency of 440 Hz, the note one octave above is at 880 Hz, and the note one octave below is at 220 Hz.

So-called hidden consecutives, also called direct or covered octaves or fifths, occur when two independent parts approach a single perfect fifth or octave by similar motion instead of oblique or contrary motion. A single fifth or octave approached this way is sometimes called an exposed fifth or exposed octave.

Hidden fifths movement is when the voice are moving in the same direction, and the second interval is a fifth, but the first interval was something different. For example, the two voices moved from C & F (a fourth) to D & A (they both moved upwards into a perfect fifth).

Sometimes the outer voices will move in similar motion to the interval of a 5th or octave, forming hidden fifths/octaves. Similar motion increases the emphasis which can be minimised if one of the voices moves stepwise – which is recommended in the textbooks.

An octave is a musical interval. An octave is defined both in terms of music and in terms of physics: In terms of music, an octave is the distance between one note (like C#) and the next note bearing its same name (the next C# that's either higher or lower).

: a musical interval embracing eight diatonic degrees. b. : a tone or note at this interval. c. : the harmonic combination of two tones an octave apart.

A hidden octave occurs when an implied consonant passing note would create a parallel octave. So in your example, the motion from A to D implies a consonant passing tone A-C-D, and of course C-D and C-D creates a parallel octave.

Direct (or hidden) fifths or octaves results when the outer parts move in the same direction into a perfect octave or perfect fifth with a leap in the soprano part. (

In classical music from Western culture, a fifth is the interval from the first to the last of the first five consecutive notes in a diatonic scale. The perfect fifth (often abbreviated P5) spans seven semitones, while the diminished fifth spans six and the augmented fifth spans eight semitones.

Two very famous examples of perfect fifths that will help you to do this are Twinkle Twinkle Little Star and “The Last Post”. In Twinkle Twinkle Little Star, the first “Twinkle” sounds on the root note and then the second “Twinkle” sounds a perfect fifth above it.

An octave is a musical interval of eight notes. Sing from “do” to “do” - on key - and you will have an octave. Like octagon and octopus, the key to an octave is “eight.” An octave may be the entire eight-note scale, or just the bottom and top notes, like C and C.

seven octaves On a standard piano there are 88 keys with the lowest note being an A. If you count up in octaves on a piano keyboard from this A, you will find that there are eight A's all an octave apart, meaning that the piano keyboard has seven octaves. If you start from a different pitch on the piano then there may be less!