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I am writing a four part SATB (soprano, alto, tenor, bass) and wanted to know if repeated (that is, successive) octaves are permissible?

I know that parallel fifths/octaves are not allowed, but what about successive fifths and octaves?

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Do you mean repeating the same octave? Yes that's fine. – ecline6 May 3 '13 at 14:13
Great question -- my students got confused by this every year until I started putting it in bold type on the assignments. Use the term "oblique octaves" instead of successive, since that's a term others use to mean parallel. – Michael Scott Cuthbert May 3 '13 at 14:42

Yes, they are, and many authorities seem to consider this so utterly obvious that they never even mention it. (Tripped me up big time when doing a music test right after changing schools, once.)

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