Power Blade has such an amazing soundtrack. It's definitely one of my favourite NES soundtracks ever, and I only recently learnt that it was by the same composer who did Castlevania. Listening to both soundtracks now, it makes sense.
I am surprised she mentioned Mega Man X3 as her favourite soundtrack though. I think it's very forgettable compared to her other work, but maybe that's just me. To be honest, I only liked the soundtrack in MMX. What followed was painful to get into, IMO. Especially X2, but also X3.