Songs Duration Question

Just wondering, do all Bard buffs have the same standard duraion? Can't seem to find durations on the wiki for stuff like minuet, carols, etc.

What are the standard durations for Minne, Minuet, Madrigal, Prelude, Mambo, Carols, Other Resistance songs, March, Etudes, Scherzo?

2 minutes for buffs. (ofc without gear or instruments, if you were naked.)

Debuffs depend on whether it was partially resisted or not.

Depends on your instrument+ and buff duration gear. Otherwise they're the same I believe, disregarding resists. Can check on wiki for the base durations.

Just wanted to know what was the cap on Song duration for enhancing songs. Base duration is 120 seconds. The only gear I know of that increases duration are:
Aoidos' Hongreline +2 - 10%
Aoidos' Matinee - 10%
Daurdabla (Level 95) - 30%

What else?

Carnwenhan <.< 50%. lol but besides that, there's nothing else.

Well, each +1 on an instrument gives, IIRC, like 10% duration bonus so that's important to add, though I suppose most people count it as default but that means a lot for 99 gjallar.

Real quick question, since it doesn't seems that there was an answer to it, but does the song duration+ gear stack? And if it does, does it cap out anywhere?

That is, if you had the 99 mythic (+50%), the harp at 95 (+30%), the af3+2 (+10%) and the af3 neck (+10%), would you be seeing double length (+100%) songs?

All of it stacks, there is no cap that I'm aware of but I also don't have a mythic to test. But the +4 on Gjallar increase the duration more than the 30% the harp does. Also, salvage pants +1 have more duration on them as well.