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_11827596_4 (music_director VARCHAR, co_singer VARCHAR, film_name VARCHAR)

### Question ###
What was the number of music directors where the suresh wadkar co singer of bhayanak?

### Accurate SQL ###

SELECT COUNT(music_director) FROM table_11827596_4 WHERE co_singer = "Suresh Wadkar" AND film_name = "Bhayanak"