Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_2144389_8 (vocalist VARCHAR, japanese_translation VARCHAR)
### Question:
Name the number of vocalists for  which one ~ is it?
### Answer:
SELECT COUNT(vocalist) FROM table_2144389_8 WHERE japanese_translation = "Which One ~ Is It?"