17-year-old violin virtuoso and internet sensation Karolina Protsenko stunned her fans when she swapped out her usual stringed instrument for an acoustic guitar just in time to slay a live rendition of Ben E. King’s “Stand By Me” while busking.
But Karolina’s surprise was totally upstaged by that of her four-year-old brother, Nicholas, who stole the show in the middle of Karolina’s set!
The moment has gone YouTube-viral, amassing more than 299,000 views since reaching the site last November. Music Man readers can watch the magic unfold in the video above…
Karolina invites her audience to sing along to the hit’s lyrics, but as she begins her first verse, the crowd remains silent, fearful not to muddy her crisp, pitch-perfect rendition.
As Karolina reaches her second verse, the camera pans around to reveal pipsqueak Nicholas perched at the keyboard beside his sister. It’s almost as if one child prodigy isn’t enough for the Protsenko family: Nicholas joins the live rendition, laying chords beneath his sister’s guitar strums with a sense of clarity and timing that seems way beyond his years.
Karolina even scales back her own guitar work to hand the limelight over to her brother, who makes their set ten times more wholesome as he plays with a beaming smile.
But Nicholas’ piano skills aren’t the only trick he’s hiding up his tiny sleeves. By the time the chorus rolls around, Nicholas is testing out his own vocals, backing his sister’s top lines with his cutely childlike voice, creating one of the most heart-melting family duets you’ll come across today!
Their performance is low-key chaotic, but in the best possible way: Karolina’s pro skills being met with Nicholas’ slightly less seasoned take on a hit that’s over 50 years older than he is. His vocal talent is still in its early stages of forming; however, Karolina plays the role of big sister perfectly as she lets Nicholas experiment and shine in his own darling way.
Haven’t come across child star Karolina Protsenko before? This Ukrainian-born violinist, singer, and songwriter first hit the limelight around 2017, when she began busking in California, attracting such attention that, within a matter of years, she landed an interview on The Ellen DeGeneres Show, and later on its successor, The Kelly Clarkson Show.
Her official Spotify page features four full-length albums, culminating in 2019’s “Sky,” and supported by a number of singles released over the course of the 2020s; Karolina’s latest being a 2026 cover of “Hero.”
Karolina has amassed more than 70,000 monthly listeners, 2.2 million Instagram followers, and 417,000 YouTube subscribers to date. A jaw-dropping 28 of her YouTube vids have surpassed the million-view landmark, so if Nicholas is seriously considering starting a music career of his own one day, he doesn’t just have some big shoes to fill, but a sister that knows all the ins and outs of how to become an online musical mastermind!
Karolina Protsenko’s unexpected guitar turn — and little brother Nicholas’s priceless cameo — proves she’s a natural performer with irresistible charm. The viral clip is a must-watch for fans of raw talent and joyful spontaneity. Want to explore more from Karolina and watch the full performance? Find useful links to videos and profiles below this paragraph.