[rrrpiano]

I'm trying to use Collection filtering. 
In my Collection list are names like "easy", "hard", "needs more practice", etc.
When I use the Collection filter, and I select "hard", "needs more practice", the 
result is an OR function. All songs with "hard" or "needs more practice" are displayed.

Is there a way to make it an AND function? I'd like to find only songs that have both "hard' and 
"needs more practice".
thanks!