Barcarola without Voyager in various stages in Reverie - Reverse 1999
#reverse1999gameplay
#reverse1999guide
0:00 200M-3
6:11 200M-2
11:51 250M-2
19:35 290M
Comparison with Voyager Only Runs
200M-3
Barca - 4 Rounds
Voyager - 6 Rounds
Barca definitely boosts Impromptu more and since this is a ST fight, there is no concern of Impromptu flying all over the place. Also Kakania P5 (in this run) is just too broken and does too much dmg.
So I would say Barca run with P0 Kakania would be 5 Rounds.
200M-2
Barca - 5 Rounds
Voyager - 4 Rounds
Barca's Impromptu flying all over the place really affect her DMG on the main Boss. But never the less it was very good to control the minion as she kills them preventing them from attacking.
250M-2
Barca - 6 Rounds
Voyager - 6 Rounds
Same problem as previous stage, but can be seen that Barca does way more dmg per hit compared to Voyager. Mainly due to Barcarola changing impromptu afflatus to Star.
290M
Barca - Failed
Voyager - 5 Rounds
Barca just kept hitting the ghost and giving so many Moribund stacks to Necrologist, she also lacked the utility to Seal the minions which allow the minion to use their Ultimate.