A cappella popularity (on the net)

They're based at Oakland School for the Arts, but the group has an international following. They've helped fill concert venues appearing with top-line professional groups. So...they are a legit member of this intriguing project you started here. NOTE: Vocal Rush is all female right now...12 young women. They've had some male members. Didn't know if that meant they were a female group or mixed. They're on Spotify but I had no idea what link you wanted there.
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Vocal Rush is a two-time national champion a cappella ensemble based out of Oakland School for the Arts (OSA) and comprised of singers ages 15-18. Combining passion, talent and dedication, along with the vision of director/founder Lisa Forkish, Vocal Rush has become one of the most respected high school a cappella groups in the U.S. since their inception in March, 2011. Before joining the renowned School of Vocal Music faculty at OSA, led by chair/founder Cava Menzies, Forkish was music director for the University of Oregon’s award-winning a cappella group Divisi, featured in Mickey Rapkin's book "Pitch Perfect," later made into the box-office smash film. Vocal Rush has received numerous accolades, including national championship titles in 2012 and 2013, a first place win at the L.A. A Cappella Festival, and most recently, a third place win on NBC's hit a cappella competition show, “The Sing-Off." Past members of Vocal Rush have performed for President Obama as well as OSA founder, California Governor Jerry Brown. In 2012, the group released a four-song EP titled “The Beginning” that was nominated for three Contemporary A Cappella Recording Awards, including Best High School Album. The ensemble has the soulful stage presence and urban swag that reflects all that is unique to OSA and sets them apart in the a cappella scene.