How many boxes you need to fill!

1 box: Very short, simple song.

3 boxes: Average pop songs without much importance to the composer.

5 boxes: Long pop song or average classical piece, of moderate importance to composer.

7 boxes: Very important pop song or moderately important classical piece, of decent length.

10 boxes: Exceptionally important or complex pop song, of great importance, or long classical composition of moderate to great importance. Half a symphony or so.

25 boxes: Magnum opus of any variety, full symphony or opera.