a sentence from the textbook "the Cambridge Grammar of the English Language", page 382:
(1) Come on, anyone, join me up here on the stage.
my variant:
(2) Come on, someone, join me up here on the stage.
Is (2) correct?
If not, then why not?
If it is, then what's the difference between (1) and (2)?
If there is no difference, then what's special in this sentence that we can use both "some" and "any" in it without changing the meaning?