I'm also curious as well, when you say "4:30 of a slightly powerful song." Songs generally last around 3:00min~ now depending on which song it is with AF3+2 and their +3 Instrument. I'm just wondering if you got 4:30 with Troubadour, since it should really be 6:00min~ (possibly even 6:24min). It would be nice to have it on a 5min Recast timer though, especially if it can augments debuffs.

I'm really curious to see if it can work with Finale actually lol, if we could potentially get rid of two or more status buffs with Marcato+Finale... could be interesting lol. How useful this is compared to a stronger song though... :/