Not
beyond Dexterous Sonata, you need 170 AAs to start filling the bottom line (although now I say that someone did mention there was a way to 'cheat the system' but I can't remember how

)
I respecced before 170, losing some points in the Dirge tree, but keeping Bard intact, didn't seem to have a negative impact.
I think this has been discussed in more depth in
this thread if it helps.