Dial sounds

Usage examples of tones.

This latter usage seems also to be disappearing however, and the tenor part is commonly written on the treble staff, it being understood that the tones are to be sung an octave lower than the notes would indicate.

The same key-signature may stand for either one of two keys, the major key, or its relative minor, hence in order to determine in what key a melody is one must note whether the tones are grouped about the major tonic DO or the minor tonic LA.

When found below the staff the same sign serves to indicate that the tones are to be sounded an octave lower.

In vocal music, to show that two or more tones are to be sung to one syllable of text.

This mark is also sometimes used after a staccato passage to show that the tones are no longer to be performed in detached fashion, but are to be sustained.

All indicate that a certain tone or chord is to be differentiated from its neighboring tones or chords by receiving a certain relative amount of stress.

The lower of these two tones is represented by the printed note, while the upper one is the next higher tone in the diatonic scale of the key in which the composition is written.

The interval between the two tones may therefore be either a half-step or a whole-step.

In this case the four tones are of equal length as in the first example.

The difference among the various scales has been in the selection of intervals between the scale-tones, and, consequently, in the number of tones within the octave.

In studying the theory of the scale the student should bear in mind the fact that a scale is not an arbitrary series of tones which some one has invented, and which others are required to make use of.

It should be noted in this connection also that not all scales present an equally good opportunity of having their tones used as a basis for tonality or key-feeling: neither the chromatic nor the whole-step scale possess the necessary characteristics for being used as tonality scales in the same sense that our major and minor scales are so used.

B, but in each case it is the same scale because the intervals between its tones are the same.

It should be noted that this change in the seventh tone of the scale caused an interval of a step-and-a-half between the sixth and seventh tones of the scale.

In the above chromatic scales these intermediate tones have been represented by black note-heads so as to differentiate them from the notes representing diatonic scale tones.