JB was born and raised in Haute-Savoie. At the age of 17, he discovered dance, especially Lindy Hop. He began Swing with Andy Spitz in Lyon, and a year later, he met Thomas Blacharz, founder of the SwingJammerz. This encounter changed his life: he decided to move to Montpellier to study Lindy Hop and its teaching. Trained among others by the Ninjammerz, he developed a dynamic and engaging style, which allowed him to win competitions all over Europe. His teaching is based on Lead & Follow and strong technique.

Marion Fievet trained in Annecy in a sports-study program in classical dance, then in contemporary dance. She earned her dance teacher diploma at the CREPS in Montpellier. With diploma in hand, she continued dancing with various companies as well as in several opera productions. Through her encounters, Marion discovered a new passion: Swing dance. It was with the SwingJammerz that she started teaching regular classes with JB Mino. She has also been invited to teach in Bordeaux, at the Ardent Swing Festival in Belgium, at Swing Addict in Saint-Étienne, and continues to perform in many shows.