semi - demi quavers values

by Melrica Arendse
(Strandfontein , Cape Town )

if the timing is 7/8 how's it possible that there's only 4 notes in a bar ?

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Feb 10, 2015
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Notes and Beats in a Bar
by: Anonymous

There is no requirement for the number of notes in a bar to correspond to the number of beats in a bar; only that the duration of all the notes and rests in the bar adds up in total to the number of beats.
So in a bar of 4:4 you could see a single semibreve; 2 minims; 4 crotchets; 8 quavers; 16 semi quavers; 32 demi semi quavers or any combination of these as long as they added up to 4 crotchet beats.
To answer your question directly; in 7:8 there are 7 eighth notes (quavers) in a bar so 3 crotchets and a quaver would do as together this would add up to 7 8th notes. So would a minim, 2 quavers and 2 semi quavers.
The important thing would be maintain identity with the pulse so accurate beaming would be essential. Musicians need to be able to see where the beats fall.
In 7:8 this is usually expressed so as to give a 4 followed by 3 beat feel with the emphasis on the 1st and 5th beat or 3 beats followed by 4 with the emphasis on the 1st and 4th beats but you could use accents to give any feel you wanted as long as musicians could play it.
Beaming across the weak beats should be avoided as this makes it harder to feel the groove. For example, a dotted minim followed by a quaver, although arithmetically correct, would be difficult as it would "hide" the 4/3 or 3/4 feel. Tied notes would be better.

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