Sound
Sound

Music Basics
The Science
The Stave & Clefs
The Notes
The Timing
The Bars

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Learn the notes
Learn the rhythm
Learn about bars

 

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Music as Science

Each note is given a name. A letter from A to G. Notes one octave apart have the same letter for a name but sound higher or lower depending on their frequency.

You will see from the example shown below, that as you move from left to right across the keyboard each note of C has twice the frequency of the previous (lower) note of C. This is the same for D to D, or E to E etc.

Octaves are divided up into a 'chromatic' scale of twelve frequencies (or intervals) called semitones (thus notes can be said to be one semitone apart in pitch). An interval of two semitones is called a tone.

On a piano keyboard the 'white' keys play notes that are one tone apart, except between B and C, and E and F which are only a semitone apart. The 'black' keys play notes that are a semitone apart from the note played by the two white keys either side of them.

When played together some notes have frequencies that interact well with each other making a 'pleasant' sound, these can be used as chords. Other combinations of notes have frequencies that don't interact well with each other making musically unpleasant or discordant sounds.

 
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