I just installed V8 of the Fixpack, as I'm trying to get some exact specifics on behavior in a patched/Fickpacked game, and noticed a rather glaring error in the Bard Song Fixes. Short version, apparently the Blade and default Bard essentially sing each other's Songs. I haven't checked the Jester & Skald yet.
Long version: KITLIST.2DA says that Blades use CLABBA02, leaving CLABBA01 unclaimed, presumably for the unkitted Bard.
CLABBA01.2DA (Bards) includes nothing but AP_FJBARD, which changes Bard Song Effect to FJBARDA. FJBARDA.SPL does nothing but protect its recipients from Fear and Morale Failure. NO other Extended Headers are present, Bards sing this Song no matter their level.
CLABBA02.2DA (Blades) includes, among many other commands, AP_FJBLADE, which changes Bard Song Effect to FJBARDB. FJBARDB.SPL has the same Fear immunities as FJBARDA, plus a +1 Luck bonus. At caster level 15, the Luck modifier increases to +2, and then to +3 at Level 20.
The "Bard Song does not improve with levels" has been removed as a penalty from the Blade's Kit Description, so it was likely your intention to make the halved Lore and Pick Pockets scores the Blade's only disadvantages. But I strongly doubt you meant to cripple the vanilla Bard.
[ADD] SoA+ToB, Official Patch, Fixpack v8, nothing else. [/ADD]