Welcome to Uncle Jon’s Music!

We are an award-winning, family-owned and operated musical instrument store and service center in Westmont, IL, serving the community since 2004. We provide old-school charm and a friendly atmosphere with modern sensibilities. Visit us for expert knowledge, top-tier customer service, and great prices. As active members of the community, we proudly support local events, schools, churches, sports teams, and more.

Uncle Jon’s Music sells new and used instruments, including ukuleles, guitars, band instruments, and more. We also offer professional repairs. Our school band instrument rentals are made possible through our national affiliate, VIR, offering competitive rates, name-brand, director-approved instruments, and a money-saving opening offer. Rent from home today!

We provide music lessons with experienced, qualified instructors. Weekly private lessons are the best way to learn an instrument, offering a personalized experience tailored to each student’s needs and goals. Every lesson is different—because every student is unique! Sign up now.

Beyond supporting local events, we host our own, including monthly ukulele circles, student showcases, our annual Restring For Food drive, a customer appreciation hot dog party, holiday events, and more.

In 2016, UJM was honored with the Westmont Chamber Dick Busse Business of The Year Award, recognizing excellence in community service, business promotion, and civic responsibility. We’ve also been featured in Music Inc. magazine, Neighbors of Westmont, and other publications.

We’re not just store owners—we’re musicians! You may have seen us performing with The Flat Cats swing band, Die Kellerknaben Polka Band, or Uncle Jon's Ukulele Group at events like Taste of Westmont, Police Night Out, Lions Oktoberfest, Red, White & Barbecue, Frosty & Friends Parade, Cruise Night, and many more.

Jon Kostal Jr. holds degrees in performance and composition and has been a private music instructor since 2001, teaching a wide range of instruments, styles, ages, and abilities. In addition to one-on-one lessons, he teaches beginning band, ukulele workshops, summer camps, park district classes, and more.  Take lessons here.

We look forward to serving you! Contact us today with any questions.