CREATE TABLE table_name_83 (period_active VARCHAR, release_year_of_first_charted_record VARCHAR, genre VARCHAR)

What's the period of a rock album released in 1973?
SELECT period_active FROM table_name_83 WHERE release_year_of_first_charted_record = 1973 AND genre = "rock"
SELECT "period_active" FROM "table_name_83" WHERE "genre" = "rock" AND "release_year_of_first_charted_record" = 1973