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_59884 ( "Pianist" text, "Conductor" text, "Record Company" text, "Year of Recording" real, "Format" text )

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

### Accurate SQL ###

SELECT SUM("Year of Recording") FROM table_59884 WHERE "Conductor" = 'libor pesek'