Hello,
Besides being a web developer, I was an actor for many years, in TV and plays, so I have a trained voice. Maybe that's not what you need, but I can also sing.
Mexican Spanish is my mother tongue and I have a neutral accent (many people in my country have regional accents; I don't).
I don't know if the $50/hour is correct, but if this is a long-term job, I can work 40 hours for $400 each week.
Best wishes,
Lucio Gutierrez