[@Thinslayer]

Tissue:
Normally yes, sorry if that wasn't entirely clear. 

Window of oppertunity:
As he did keep that in his pocket, this would logically be it. But let's say... for the sake of a humorous novelty, it doesn't have to be.  
(As it is nice to grant you some say in who Ravadon is beyond his usual stereotyping... xD)

Reasoning:
Also, seeing the state Ravadon is in, I doubt he could read that all on his own. Let alone sing it aloud.