Two precision vocal training tools:
The versatile brass Sing Ring ($49) and
The hand-crafted OOVO Straw Necklace (from $119). Built on SOVT science, used daily and trusted by Award-winning singers, Broadway leads, and top voice clinicians.
Individually Hand-Crafted
Designed in Santa Monica
Free US Shipping
30-Day Free US Returns · 6-Month Warranty
Used by Grammy & Broadway Pros
★★★★★ 4.5 across 600+ reviews
As featured in
The New York Times
The Today Show
Rolling Stone
Journal of Voice
Where most singers start
Four resistance levels in one solid antimicrobial brass device. Like four different-diameter straws in your pocket, with instant switching between them. Engineered around the same SOVT science as the Necklace. Our bestseller, and the device tested in the Journal of Voice study above. Made from premium jewelry-grade Italian-sourced brass — lead-free, nickel-free, and inherently antimicrobial — in the same alloy family used by professional wind instruments. The copper-rich alloy actively resists odor-causing bacteria in storage, so it stays fresh between uses.
★★★★★ 4.5 / 5 · across 500+ reviews
$49 · Includes carrying case
“It's like hitting a reset button for your voice.” — Laura Donohue, Nashville Vocal Coach
“Chic as hell. I use it twice a day on show days. It changed the game for me.” — Scott Hoying, Pentatonix
“Beautiful and functional. I love it.” — Isabel Leonard, GRAMMY Mezzo-Soprano
“OOVO Straw gets me through, baby.” — Jessica Vosk, Broadway's Wicked
“I use it before and after warmups — in the car, in hotel rooms. Just a few minutes help.” — Heather Headley, Tony Award winner
Vocal Science at its Best
OOVO is engineered around the science of Semi-Occluded Vocal Tract (SOVT) training, popularized by Dr. Ingo Titze and built on decades of clinical voice research. The straw’s precise 3mm interior balances the air pressure across your vocal folds, letting you train with less impact and recover faster.
Peer-Reviewed Research
In a 2024 study published in the Journal of Voice, heavy-voice-use professionals using the OOVO Sing Ring as part of a daily SOVT protocol showed statistically significant improvements in vocal effort and the lowest dropout rate of any group tested. Five months after the study ended, in an unannounced follow-up, more than half of all participants were still doing the exercises on their own.
Sara Davis, M.A., CCC-SLP; Lauren Mikhail, M.A., CCC-SLP; Meredith Tabangin; Mekibib Altaye. “Does the Daily Practice of a Structured Voice Exercise Protocol Affect the Fitness Instructor’s Self-Perceived Vocal Effort, Vocal Fatigue, and Voice Handicap?” Journal of Voice, 2024.
Read the study →Precision-engineered to 3mm professional resistance. Crafted in jewelry-grade sterling silver, gold vermeil, or rose gold vermeil. Individually hand-made by jewelers.
Trusted by
GRAMMY Camp
A Cappella Academy
Our Story
“A piece of disposable plastic was the standard delivery system for one of the most validated techniques in modern vocal pedagogy. We set out to fix that.”
Patrick Lundquist, Founder & CEO · Designed in Santa Monica
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