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_14 ( year_of_recording INTEGER, conductor VARCHAR )

### Question ###
What is the year that a record was recorded with Libor Pesek as conductor?

### Accurate SQL ###

SELECT SUM(year_of_recording) FROM table_name_14 WHERE conductor = "libor pesek"