adding footnote calls

[Denis . Roegel]

Hi,

I would like to write comments on a score, and specifically, I would
like to add something like a circled 1, a circled 2,
or a small letter, etc. in various places, so that later I can write:

  (1) this note ...
  (2) this group of notes differs from ...

I am looking for something like an horizontal bracket to which I could
add a tag, above or below. I am sure this has already been done,
but I didn't find a good example.

Thanks,

Denis