Crossword puzzle clue "either blank in a jazzperson's one two one two three four"

Either blank in a jazzperson's "One ___ two ___ one two three four"

What the blank in a fill-in-the-blank clue signifies

Word that goes in either blank of the David Bowie classic "___ to ___"

Word in either blank of "Good ___/bad ___"

Either John or Joan of "Grosse Pointe Blank"

Word that goes in either blank in the classic movie quote "___? Where we're going we don't need ___"

Words that go in either blank of "___ may ___ might"

Either of two brothers who share four Academy Awards