Table schema:
CREATE TABLE table_21500850_1 (song_title VARCHAR, artist VARCHAR, genre VARCHAR, original_game VARCHAR)

Question: What is every song title for the rock genre and Guitar Hero as original game and the artist is Queens of the Stone Age?
SQL: SELECT song_title FROM table_21500850_1 WHERE genre = "Rock" AND original_game = "Guitar Hero" AND artist = "Queens of the Stone Age"