Unlocking the Mystery: Solve the Opening Sequence Crossword!

The answer to the crossword question “Opening sequence is ABC” is likely “Alphabet.” The word “ABC” is often used to refer to the first three letters of the English alphabet, and an opening sequence that is alphabetical could be described as “ABC.” Therefore, “Alphabet” would be an appropriate answer to this clue. Of course, it is important to keep in mind that the answer to a crossword clue may vary depending on the specific puzzle being solved, as well as the context and wording of the clue itself.