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_name_89 (artist VARCHAR, theme VARCHAR)
### Question:
What artist's song was performed in the week with theme of Billboard #1?
### Answer:
SELECT artist FROM table_name_89 WHERE theme = "billboard #1"