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