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_55843 ( "Year" real, "MRHMA" text, "USCA" text, "RTHK" text, "Joint Music Award" text, "Total" real )

### Question ###
How many Joint Music Awards are there when the Total is larger than 18, in a Year after 2007?

### Accurate SQL ###

SELECT "Joint Music Award" FROM table_55843 WHERE "Total" > '18' AND "Year" > '2007'