A double sharp. They look like bold letter 'x'.
It is called a "natural" sign, and it cancels out/naturalizes a sharp or a flat.
if you are playing a brass instrument you tighten or loosen your ambocure (lips) to come out with a higher or lower note a sharp
An accidental can be a flat, natural, or sharp, used for a note NOT in the key (such as an F-sharp in C major).
An accidental can be a flat, natural, or sharp, used for a note NOT in the key (such as an F-sharp in C major).
which accidental is used in measure 15 how does this accidental alter the original note
An accidental is a sharp or flat that is not written in the key signature.
Just the opposite, actually. A sharp RAISES a note by one half-step.
A major, or F# minor
The sharp symbol (#)
The symbol to lower a note a half step is called a flat.
A sharp in music raises a note by one half-step.
If the note F had a sharp accidental in a music piece, then all other F's would be sharp for the rest of the measure, unless there is a natural sign.