B. Mathieu is a contemporary French jazz arranger and composer, renowned for his sophisticated contributions to large ensemble jazz. Emerging in the early 2000s, Mathieu's style blends modern harmonic concepts with a deep appreciation for the swing era, creating vibrant and challenging charts. His work with the Orchestre National de Jazz and numerous European big bands has garnered critical acclaim. Mathieu is particularly celebrated for his innovative re-imaginings of classic standards and his original compositions, which often feature intricate counterpoint and rich orchestral textures, pushing the boundaries of contemporary jazz band music.