Hi, I`m learning Moonlight Sonata and there`s this fancy-looking "x" by the notehead, can anyone tell me what this means? Thanks a lot!

Hi... This is a double sharp. This means that you go up 1 whole step from where you are. For instance, if it is next to an `F` then you will play a `G`.

thanks a lot! :-)

You`re welcome. I`m glad I could help.

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For future reference, and for music theory, i`d think of it more so as 2 half steps instead of one whole. (Considering it`s called a double sharp)

umm, out of curiosity, why do they use a double sharp instead of just writing a note higher? i`m not that far in learning theory so it`s never really been explained to me... and i haven`t actually played a piece with a double sharp in it yet.

Composers use the double sharp symbol because the enharmonic might not be in the key signature or it might make things more complicated later on. For instance, consider the key of A (3 sharps, F#, C#, and G#). If a composer wants to write a G natural or an F double sharp, but later in that same measure there is a G sharp (which is in the key), it would be better to write G natural and then G sharp. It would be easier just to write F double sharp and then a G without any accidentals.

Also, in minor keys, the sixths and/or seventh notes of the scales are sharped (or raised a half step). And if that note is already a sharp note, then you would have to write double sharp. For instance, consider the G# harmonic minor scale (G#, A#, B, C#, D#, E, F double #, and G#).

omg.. that lesson was intense.. hahah... i tihnk i get it.. thanks! i appreciate it!