What week # featured first solo as the theme?
CREATE TABLE table_21501564_1 (week__number VARCHAR, theme VARCHAR)
SELECT week__number FROM table_21501564_1 WHERE theme = "First Solo"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21501564_1 (week__number VARCHAR, theme VARCHAR) Question: What week # featured first solo as the theme? [/INST] SELECT week__number FROM table_21501564_1 WHERE theme = "First Solo" </s>