Question: Can a mindless creature receive the benefit of bardic performance? Like a vermin or a skeleton? If a bard was playing and commanded them in some way (handle animals, command undead) would the creatures receive the benefit of bardic performance?
No, mindless creatures are immune to mind affecting effects, which morale is (which bardic music typically is).
Unless you have something specific like the dirge bard's ability to affect mindless undead, mindless creatures are pretty much immune to any mind effecting ability.
That's what I thought. Thanks.