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_17267 ( "Series #" real, "Season #" real, "Title" text, "Directed by" text, "Written by" text, "Musical guest and song" text, "Original air date" text, "Production code" text )

### Question ###
How many musical guests and songs were in episodes with a production code k0519?

### Accurate SQL ###

SELECT COUNT("Musical guest and song") FROM table_17267 WHERE "Production code" = 'K0519'