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_9901 ( "Matrix" real, "Recording date" text, "Title" text, "Accompaniment" text, "Paramount Issue No." real, "Sandra Lieb Classification" text, "JSP 77933" text, "Document DOCD" real )

### Question ###
what is the highest matrix when the recording date is 1926/03?

### Accurate SQL ###

SELECT MAX("Matrix") FROM table_9901 WHERE "Recording date" = '1926/03'