But tonight I've heard 2 vocals - one used by Jeffrey Buttle, which was scat singing and thus could be considered voice-as-instrument, but then there was an operatic chorus, which.... is vocal, even if it is in Italian and from opera (wait, this is Italy, this is everyday music to them....)
Has there been a change, or do judges just not care about that sort of thing any more? Or is the deduction, if any, so trivial that it doesn't matter?