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_191105_2 ( performed_by VARCHAR, subject VARCHAR )

### Question ###
When interjection is the subject how many performers are there?

### Accurate SQL ###

SELECT COUNT(performed_by) FROM table_191105_2 WHERE subject = "interjection"