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_name_37 ( b_score INTEGER, a_score VARCHAR, total VARCHAR )

### Question ###
what is the sum of the b score when the a score is 6.6 and the total is 15.6?

### Accurate SQL ###

SELECT SUM(b_score) FROM table_name_37 WHERE a_score = 6.6 AND total = 15.6