I have a question about the glissando:
Does a glissando (on piano) have a meaning of playing just white notes regardless of which key we are in? For example, in F# we have a lot of sharps. If I want an upward-sliding glissando effect from C# through G# (where the G# is ~an octave and a half above the C#), is that properly communicated using a glissando? Would a glissando entail playing all black keys from C# to G#, or would it just entail playing the white keys on the piano?
I have a second question that would be related to this question. So after finding the answer to this question, I'll ask my second question in another post (assuming this response doesn't also answer my second question).
Thanks in advance.