octave x-headed notes

by Paul
(Durham, NC)

In Bachianas Brasileiras No. 5, passage where bass is E, F, E, the score shows unison octave with x as the upper note head. What does that mean? It's playable really only with the bass note, but the F gives a fingering of 4, which wouldn't work for either low or mid.

Hi Paul,

The symbol "X" usually means a rhythm without pitch. You can see this type of notation with percussion instruments. I have heard the piece you mentioned but I'm not too familiar with it.

Perhaps someone can offer some more information on the subject.

Kind regards,
Trevor M.