What exactly is a double sharp? I know that the symbol looks sort of like an "x" but what does a double sharp mean. For example, if I were in the key of B major and come across an F with a double sharp what note would I play?
Thanks :sweat:

F Double Sharp = G (Natural)

It's literally going up two half steps.

Some more examples so you know :

B Double # = C#
A Double # = B (Natural)

The same goes for double flats; it does down two half steps.

I know, it sounds really complicated, but in all reality when you know it, it's playschool knowledge. x_x

Basically you just sharp a note that's already sharped.

What Mazeppa said. ^_^

Thanks!
Man now I feel so stupid :heh:
BTW why don't they just put a natural symbol in front of G instead of double sharping an F?

^If it's a really complex key that contains a lot of sharps, some people would do that.

Oh Okay. Thanks!

What Clarinetist said.

A great example is key of d# minor

Normally, you play a d# scale, it goes:

D# E F# G# A# B D D#

But you can't have from D to D# in a proper scale. So it looks like this instead:

D# E F# G# A# B Cx D#

lol Hi, I'm new here.

And, honestly, I've always hated double sharps. Whenever I've played in shows and I sight-read, I ALWAYS get confused on what note I should be playing. Might just be because I suck, but I dunno. If it's easier, just write the enharmonic note on the top. :D

** Plus you'll really ONLY see this with Chopin, Liszt, and occasionally Beethoven.

Chopin is the most popular for the double sharps and flats. Liszt has some just to f*** with you. Lol.