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_27178 ( "Year" text, "Amiga demo" text, "PC demo" text, "C64 demo" text, "Amiga intro" text, "PC intro" text )

### Question ###
What won best amiga demo when alto knallo (free electric band) won best pc demo?

### Accurate SQL ###

SELECT "Amiga demo" FROM table_27178 WHERE "PC demo" = 'Alto Knallo (Free Electric Band)'