Defensive Bard Song

[Vetril]

Hi, is there some feat/prc/acf fueled by bard song uses that increases AC/gives a miss chance/grants damage reduction?
I already know of ironskin chant but I was looking for something more usable than dr 5/- which does not scale.

[Hiro Quester]

Heartfire Fanner PrC has bardic music (inspired fight) that grants temporary use of fighter bonus feats. HF3 has inspired fight 2 that enables use of two fighter bonus feats.

So you could sing that and grant allies two bonus feats. Allies get to choose. If they wanted extra AC they could choose dodge and mobility.

There are better feats than those to choose. But you could use it to increadpse AC, if that's your goal.

Edit:
if you get a horn of resilience (part of the regalia of the Hero in MIC, which also includes Badge of Valor), then using the horn to start Inspire Greatness, gives you and allies in 30 ft. DR5/-, plus one ally gets 50 temporary hit points.

[Geddy2112]

There is court bard from pathfinder, that debuffs attack, damage, and saves against fear with their "inspire courage". It effectively increase AC by reducing attack and provides DR from reducing damage.