1a The way in which backing instruments provide entertainment (6,4) P???E?,??O?
12a Measure a large sack holding book, then get light carrier (7,5) ?P???A?,?????
20a Happen as a result of working inside to obey father's order (6,2,4) F?L?O?,O?,????
25a Scale of greed, it can shock (10) ?E???????E