Studio Specs

Roswell K87 Mic
SSL 2 Interface
Treated VO Studio
Macbook Pro w/ Twisted Wave DAW

About Me

Hi there! I’m a theatrically trained voice over actor, singer, and voice teacher with a passion for meaningful communication. My voice has been described as golden-toned, intimate, and versatile—able to shift from grounded and conversational to dynamic and expressive, depending on what the moment calls for.

I’ve voiced commercials, explainer videos, promos, award films, a call to action for a major nonprofit—and even voiced a toy. I love the variety of this work. Each project is a chance to connect with a listener and make a message resonate.

Before stepping behind the mic, I spent decades performing onstage in both theatre and musical theatre, and I’ve coached fellow actors in dialects for the stage. That experience gave me a deep well of emotional range and a keen ear for vocal detail—skills I now bring to every read.

What fuels my work, beyond the mic, is connection. As a parent to a remarkable young adult on the autism spectrum, I’ve learned the true value of patience, deep listening, and meeting people where they are. That perspective brings an added layer of compassion and emotional intelligence to everything I do—whether I’m voicing a commercial, teaching a student, or collaborating with a creative team.

Improv is my playground (10+ years), and I’m always growing through ongoing training at Berkeley Rep School of Theatre and VoiceOne in San Francisco. I believe great voiceover is more than sounding good—it’s about connection, clarity, and intention.

From my broadcast-quality home studio, I deliver fast, professional voiceover with heart. If you’re looking for a voice that’s not only polished and professional, but genuinely human—I’d love to connect.
Where storytelling meets the perfect voice.
"I want to tell your story, and my strong listening skills and empathy can help me connect to and create your vision"
Specialties: Commercial VO | Explainers | Promos | Toys | Award Films | Call to Action | Brand Storytelling

​Remote-Ready | Collaborative | Conversational | Broadcast-Quality Sound

Happy Clients

Testimonials

"Working with Rebecca is always a pleasure. She always brings intriguing and inspiring approaches to her reads and immediately incorporates any adjustments to tune the performance. She starts with great ideas and builds upon them quickly. I've always appreciated her strong focus on problem-solving, whether analyzing a script or setting up a quality recording space. Rebecca is a welcome partner in any creative project. "

- Jim Edgar, Voice Over Audio Assurance and Voice Over Teacher

​Fabulous results and incredibly flexible in both delivery and timing. Castelli is a true artist and we look forward to using her again for voice work.
​
- David L., Parliament Studios

Very fast at sending recording files, flexible with script changes, and very responsive with notes. Great working with her!

- Gina H., Green Buzz Agency
Rebecca's voice was exactly what we were looking for - warm, professional, and engaging! She nailed the tone we needed on the first try. Great communication throughout, incredibly responsive, and a quick turnaround. Working with her is an absolute pleasure. Highly recommend!

- Galyna D., Full Slice Agency

Rebecca's voice was exactly what we were looking for - warm, professional, and engaging! She nailed the tone we needed on the first try. Great communication throughout, incredibly responsive, and a quick turnaround. Working with her is an absolute pleasure. Highly recommend!
​
- Lauren M., Wooshi

Rebecca has a unique voice that was perfect for our project! She was super fast in sending us what we needed and was very responsive. Would definitely work with Rebecca again!

- Zoe, Ads Creative Team

Resume

  • EDUCATION - MFA PERFORMANCE
  • DIALECT COACH (Also trained with premiere dialect coach Paul Meier)
  • VOICE & SPEECH COACH
  • STRONG DRAMATIC BACKGROUND IN PROFESSIONAL PLAYS AND MUSICALS
  • EXTENSIVE TRAINING WITH VOICE ONE

Contact Rebecca