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Welcome to Innerphonic Artist Development and the official website of Marzuki Grinage! 


Whether you're interested in improving your voice by studying a World Famous Vocal Technique, want to learn Guitar, Bass, Songwriting, need a Songwriter, Arranger, Music Producer, Engineer, your songs Professionally Recorded, or want to get to know more about Marzuki Grinage as a Musician, you've come to the right place!


Voice Lessons -

What do Stevie Wonder, Michael Jackson, Prince, Anita Baker, Tamia, Luther Vandross, Ray Charles, Amy Lee (Evanescence,) Kelly Clarkson, Regina Spektor, David Archuletta, Ozzy Osbourne and over 120 Grammy Award winners have in common?

They have all used the Speech Level Singing Technique created by Seth Riggs!


Marzuki Grinage is a Certified Voice Instructor of the Legendary Speech Level Singing Technique in Oakland, CA. SLS is the most recognized vocal technique in the world.

With some of the world's top celebrities using this technique and with over a million students, the SLS technique will help you stand above the competition.

Voice and Singing Lessons, Learn the Vocal Technique of The Stars in Oakland, San Leandro and the San Francisco Bay Area! Online lessons also available on Skype and iChat *Guitar, Bass and Songwriting lessons are also offered.

For more info on Lessons call (510) 866-3046 or email from the Contacts page.


Also be sure to check out the Blog page for Free Singing Tips! -





"I was introduced to the SLS method and with that Marzuki not only taught me how to use my gift in a better way, he made it incredibly easy for me to get better at singing. My first aid from him came in preparation for American Idol 2010 season (which I made Top 135 out of estimated 10,000 in Los Angeles) which I know wouldn't have been possible with out Marzuki."

"My success from the auditions is only what I hope to be the beginning of my progression as a vocalist. However I owe a tremendous deal of my progress to Marzuki, for his patience, positive feedback and support. I recommend his teachings to any singer that is serious about singing and wants to take their voice a step further."
Jason Hunter (Top 135 American Idol 2010.)



"Since working with Marzuki, gone are the days of being out of breath when I sing and feeling like I'm singing through my nose. My confidence has grown tremendously now that I am learning the right way to use my voice. Marzuki has a way of explaining things in simple terms I can understand. Even though it's only been a couple months since my lessons started, I've come further than in the last 10+ years singing on my own." Chayla Smith -



"Marzuki is the best voice instructor I've ever worked with.  Ever since I've been attending Marzuki's lessons I've noticed a huge difference in my singing and range capabilities.  I was always a good singer but Marzuki is by far the frosting on the cake.  I am more motivated than ever to pursue my singing career with confidence thanks to Marzuki." Dina Kane -


"Learning Marzuki's vocal technique has allowed me to have much freedom with my voice. I've gained power and consistency and leave gigs feeling satisfied. He pushes me to explore my abilities and to incorporate my full range seamlessly in performances. I'm grateful for his guidance and support." Lina Torio-Luna, vocalist with the band Mestiza -


"My voice teacher Marzuki Grinage - Speech Level Singing rocks! I didn't think singing could ever be this fun. The quality of my voice is really improving with his patient style. Also, I no longer lose my voice after shows with my band Sentinel. Of course there is always room for improvement, but I feel like I'm on the road to singing like the professionals. - The likes of Evanescence and Paramore." Tarabud, vocalist for the band Sentinel - 


(They are played regularly on San Francisco Bay Area radio stations including KITS Live105, KSAN (FM) The Bone, KALX UC Berkley, KUSF UC San Francisco, KZSU Stanford and regularly make the list of top Bay Area local bands.)

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