Meet Our Staff

Geoffrey Sandler

Geoffrey is the owner of Celebrations Entertainment. During his childhood years he showed the entrepreneurial spirit as he ran a very successful paper route business and was involved in high school and community live theater productions. His love for performing led him to the DJ booth at a club called “The Bottom Line” in downtown Madison. He started DJing in that club at age 18, and an official DJ career was launched! At age 20, he started DJing wedding receptions and other private parties. From the very beginning, clients and guests at every event could tell that Geoffrey had that ‘extra special’ touch. As his skill level increased, he began to realize that his growing knowledge of the industry, his desire to succeed, and his experience running a small business was the equation that equaled success, thus giving birth to Celebrations Entertainment!

At the age of 22, Geoffrey enlisted in the US Coast Guard and enjoyed a very successful active duty military career that lasted nearly a decade. During that time, Geoffrey qualified as a small boat boarding captain, an EMT, small boat engineer, a helicopter flight mechanic and a jet engine mechanic. He received numerous awards and accommodations, including Commandants letters, hazardous duty recognitions, and the 8th District ‘Sailor of the Year’ Award! Geoffrey sums up his career in the Coast Guard as being “the best job in the world, I got to save lives for a living!”

Geoffrey is renowned throughout Southern Wisconsin for his legendary talents not just as a DJ/Emcee, but for his event planning skills. From weddings to corporate events to fundraisers, Geoffrey brings years of experience to the table and knows how to structure any event!

In recent years, Geoffrey has become more involved in planning and auctioneering for events for charitable organizations and is proud of helping to raise millions of dollars for the Madison community.

Geoffrey is one of the most in-demand DJ/Emcees in Southern Wisconsin, so get him while you can!

Currently, Geoffrey lives on the near West side of Madison with his wife and two amazing kids. Geoffrey is a huge Badger and Packers fan and vey much enjoys his limited time off relaxing with friends and family.

“Geoffrey’s level of professionalism is beyond compare and his talent supersedes those of others in the business. He took the time to make sure everything was exactly what we wanted. I have an event management background and I can honestly say when you sign up to work with Celebrations Entertainment, you’re getting the best of the best!” – Suzy


John Sherman

John, a lifelong resident of Madison, WI, joined Celebrations Entertainment in 1996. Being one of the original DJ Entertainers to come aboard with owner Geoffrey, John is very proud to be a part of the growth and success of Celebrations.

Growing up as a child listening to nothing but Rat Pack and Big Band Era music from his parents, John began entertaining/DJing at an early age at his high school dances. Since then, John has performed at over 700 events ranging from weddings to birthday parties and class reunions. John has many talents and skills through his years of experience and is guaranteed to keep the dance floor packed during your entire event!

The wedding industry is John’s personal favorite. Bringing over 15 years of wedding experience, he shows a sincere yet fun approach to making sure the bride and groom’s special day is absolutely perfect! Understanding how a wedding reception should ‘flow’ and be coordinated is a defining characteristic of John’s skills as a wedding emcee. John is one of Celebrations’ top referred DJ Entertainers and an excellent choice for any event!

“So many of our friends and family raved about the choice of music and the DJ during and after the wedding! John Sherman exemplifies complete professionalism and makes sure everyone walks away saying that was the most amazing and fun event.” – Katie


Tristan Mentz

Tristan initially came to Madison to attend graduate school at the University of Wisconsin, but it wasn’t until he moved back home to the East Coast to accept a job that he got into DJing for fun. What was initially a hobby quickly turned into a passion, and after training with a company in Washington D.C. Tristan was DJing and emceeing weddings and private parties. Tristan loved Madison so much that he decided to come back, and he’s been doing events with Celebrations Entertainment ever since! Weddings, corporate events, fundraisers, school dances, Tristan can do it all!

“I received so many compliments on my amazing DJ.. we had a variety of age groups.. the younger kids enjoyed his selections that included them, he lead group dance moves so that everyone could participate, even my 90 year old grandmother raved about him. It is without hesitation or reservation that I would recommend Tristan and the Celebrations company for your next event.” – Janelle


John Scerpella

Joining in 2011,  John came to Celebrations as a dancer, but it quickly became apparent that he had the talent, knowledge, and personality to be a DJ/emcee! John was personally trained by Geoffrey Sandler, adding his years of wisdom and expertise to John’s exciting and personable attitude. From weddings to school dances and bar and bat mitzvahs, John rapidly gained a reputation as a top performer and DJ with Celebrations Entertainment.

John is our most in demand DJ for bar and bat mitzvah events, so reserve him while you can!

“EVERYONE had a fantastic time due to his professionalism and ability to work with people from age 3 to 70! John is an asset to your organization. I will highly recommend Celebrations!” – Sydney


Marcus Bales

Before joining Celebrations, Marcus was already a successful club DJ and owner of his own haunted attractions business while still attending school full-time. Marcus’s professionalism, enthusiasm for entertainment, and entrepreneurial spirit have allowed him to quickly flourish as a DJ/Entertainer under Geoffrey’s guidance.


Adam Jermain

Adam Jermain has been working for Celebrations Entertainment for the last 5 years. Adam has\ a BFA degree in theatre from the University of Milwaukee WI. While in school he worked for Celebrations on weekends organizing the warehouse and setting up the different events. Upon graduation, Adam moved back to Madison and started working full time for Celebrations Entertainment. His main role at Celebrations is designing and building custom fabrications and dealing with the production aspects of the company. When not at the office, Adam enjoys building furniture and water skiing.

Be sure to check out the Celebrations Production page at


Alex Grzybowski

Alex comes to Celebrations Entertainment from the University of Wisconsin-Milwaukee with a background in stage management and technical production. Alex moved to Madison from his hometown of Milwaukee in May of 2014 and began working full time for Celebrations Entertainment. His primary responsibilities with Celebrations Entertainment include managing the warehouse, setting up events, and managing the audio/visual and event rentals aspect of the company. He also works as a lighting designer and sound engineer for Celebrations Production events. In his free time Alex enjoys camping and hanging out with friends.

"The dance floor was packed all night long!"

- Andrea & Aaron