A, semiquaver on beat 1; B, dotted quaver on beat 1.25; C, quaver on beat 2; G, semiquaver on beat 2.5; F, semiquaver on beat 2.75; E, minim on beat 3
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A B C D E F G
Change the key and this same phrase is read against the new key's scale — the shape you practise never changes, and the notes can never leave the scale.