James Patrick Prosinski

Nov. 6, 1954 – Oct. 1, 2020

More than once, Jim wondered out-loud to Lisa, his beloved wife, if he would be remembered.

Given the outpouring of tributes and condolences that she and his siblings received after news spread of his death on Oct. 1, 2020, Jim has his answer — as emphatic as the drum solos he was known for.

Jim was born in Buffalo on Nov. 6, 1954, to Frank and Lorrie Prosinski. He grew up in homes on High Street and Adams Avenue and attended grade school, junior high and high school in Buffalo. He was an only child for 14 months until brother Steve joined the family, followed by sister Joan and baby brother Paul.

Jim was a rambunctious boy and a good student with a mind for math and music that would accompany him throughout his life. Also with him across the years were dozens of good friends who enjoyed his sense of humor, kindness and loyalty. He felt blessed to know you all.

In his pre-teen years, he started to develop his strong work ethic at his dad’s Sinclair gas station on Main Street, where he pumped gas, changed oil, fixed tires, washed cars, cleaned restrooms and much more for 10 years. He still had time to play a lot of Little League and Babe Ruth baseball, be a Cub Scout, shoot hoops, swim in the big pool and bicycle all over town with his friends.

Jim’s music teachers, particularly Joe Rulli at Buffalo High School, fueled his passion for performing. He was a talented trombonist and singer, but it was the drum set (Slingerland, of course) and rock ‘n’ roll that had a hold on him — Led Zeppelin, Steppenwolf, Rush, Grand Funk Railroad, James Gang and many others.

Joe encouraged Jim to let it loose, and he did. Jim was even given a key to the high school music room. He would put on his headphones and rock out drumming to his records, “until I would almost pass out!” He’d say, “Music is freeing to me, like breathing air.”

He attended Mary College in Bismarck, North Dakota, for one year and finished his accounting and finance degree at the University of Wyoming in Laramie. He took his studies seriously, but during college and after entering the workforce, he always had time to drive the beat for a band — from Trinity and Staggerwing to Black Diamond and Thunder Basin Boys and many others over the years.

He played with groups in Bismarck, Laramie, Denver, Dallas, Cheyenne and Casper. Mostly rock, but he could be a little bit country, too. He was remodeling his backyard music studio to better scratch his drumming itch with other musicians joining in.

His day job paid the bills, and his knowledge of finance and skills with numbers served him well at several firms. For more than 20 years, he was proud to be the accountant and office manager for Rocky Mountain Oilfield Warehouse in Casper. He enjoyed the staff he worked with and they became like family. He got a lot done in the office on the day he died. A ruptured thoracic aortic aneurysm took his life at home that evening.

Jim also loved to go fishing, gaze through the telescope at the stars with Lisa, and watch old movies and baseball and football games on TV. His 500 music albums also received regular play on his 1974 stereo.

Four years ago, Jim and Lisa (the little girl who grew up just across the street from him) fell in love. They were married on Sept. 30, 2017 and were getting ready for a weekend getaway to Thermopolis to celebrate their third anniversary. Jim is also survived by his brother Steve (Shelley) Prosinski, of Billings; sister Joan (Gil) Quesada, of San Diego; brother Paul (Kim) Prosinski, of Buffalo; his father’s widow, Dordy Prosinski; and many nieces and nephews. Jim was preceded in death by his parents.

There will be a public viewing at Harness Funeral Home Chapel in Buffalo from 1 until 9 p.m. Friday, Oct. 9. The funeral will be at 1 p.m. Saturday, Oct. 10, at the chapel. Jim will be laid to rest next to his parents in Willow Grove Cemetery after the service. A reception will follow at Bomber Mountain Civic Center, 63 N. Burritt Ave. Online condolences may be made at 

Friends may watch the service online at The service will also be recorded and available for viewing for 90 days.

In lieu of flowers, the family encourages donations to the new Jim Prosinski Music Education Fund to help BHS music students attend band camps and clinics, rent instruments, etc. Send donations to: Jim Prosinski Music Education Fund, c/o Harness Funeral Home, 351 N. Adams Ave., Buffalo, WY 82834.