Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_22807 ( "Episode title" text, "Subject" text, "Music by" text, "Performed by" text, "First aired" real )

### Question ###
WHen jaime aff and christine langner are the performers what is the subject?

### Accurate SQL ###

SELECT "Subject" FROM table_22807 WHERE "Performed by" = 'Jaime Aff and Christine Langner'