Hyper-realistic 4K video animation, smooth tracking shot following a long parade of chubby cats marching down a festive city street. Dozens of adorable cats (orange tabbies, gray tabbies, white cats) in tiny navy-blue jackets and berets play miniature trumpets in perfect unison, paws pumping rhythmically, cheeks puffed, tails swaying to the beat. They march forward confidently in formation, instruments glinting in daylight. Crowds on both sides cheer, take photos with phones, wave, some laugh in delight. Gentle camera follows from low front angle then side tracking, showing synchronized steps and trumpet movements. Ambient crowd cheers, muffled trumpet sounds, and light street noise. Vibrant colors, high detail on fur, fabric, and joyful expressions. Professional VFX style for heartwarming, absurd cat marching band fantasy. Loopable with continuous marching.