User:SOTO/Forum Archive/The Panopticon/@comment-4028641-20151011010956/@comment-827191-20151012192905
From Tardis Wiki, the free Doctor Who reference
He could also be talking to Clara, as seen from her point of view, after the whole thing is over, which would explain why he (re-)mentions the Beethoven reference to her at the end, expecting her to understand what he's talking about.
