what artist previous to july made blue ?
CREATE TABLE table_204_420 (
    id number,
    "month" text,
    "song" text,
    "artist" text,
    "aggregate points" number,
    "total downloads" number,
    "year-end chart" number
)
SELECT "artist" FROM table_204_420 WHERE "month" < 7 AND "song" = '"blue"'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what artist previous to july made blue ? ### Input: CREATE TABLE table_204_420 (
    id number,
    "month" text,
    "song" text,
    "artist" text,
    "aggregate points" number,
    "total downloads" number,
    "year-end chart" number
) ### Response: SELECT "artist" FROM table_204_420 WHERE "month" < 7 AND "song" = '"blue"'