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"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_89 (artist VARCHAR, theme VARCHAR) Question: What artist's song was performed in the week with theme of Billboard #1? [/INST] SELECT artist FROM table_name_89 WHERE theme = "billboard #1" </s>