Beertz started playing guitar when he was 13 years old. In less than a year, he was playing in a band called the Belvideres. In the 70s, he played in a band called the Witt Brothers and then with the Coffee Band along with members, Bobby K and Mike Cummings. Starting in 80s, he formed the "Funn Band" with Bobby K and Bob Annette eventually becoming the band "Krackerjax" with Debo on bass. Krackerjax was one of the most popular and successful bands in the North Jersey Club circuit. Now into the 90s, Beertz joined Benny and played for several years with the band Scarlet. He later, along with Debo and Bobby K, formed the "Last Kall Band" and has been playing the North Jersey club scene ever since.