For future survivors we should find ways to avoid this.
Maybe, dunno, counting votes from previous rounds, even though if we implement the "previous votes will count in a tiebreak" rule, one could be tempted to vote for favorite songs, that won't go away anytime soon, but might accumulate a deficit that would work against the song.
Example, if in the Metallica finals with such a rule I vote at the first round for Master of Puppets, no way my lone vote will eliminate that song.... but it might weight on a future tiebreaker because "Hey, look, these songs got the same numer of votes this round, but someone voted Master for the first 5 rounds of the finals".
So this won't probably work.