Help with SELECT

Hi guys,

Please could you help me solve this problem/challenge. I have a table that looks like this:

What I am trying to do is SELECT rows based on what "Session" the "Third User" does not belong to. In this example I would want it to return the row "Music" because "Third User" is only associated with"Session" 1 and 2, not 0.

Any help would be hugely appreciated.