CREATE TABLE table_27455867_1 (audition_city VARCHAR, episode_air_date VARCHAR)

Where were the auditions held in the episode that aired on january 27, 2011?
SELECT audition_city FROM table_27455867_1 WHERE episode_air_date = "January 27, 2011"
SELECT "audition_city" FROM "table_27455867_1" WHERE "January 27, 2011" = "episode_air_date"