A modern, minimalist, and sophisticated poster for an event's main visual, featuring an autumn-themed music market. The design should be artistic, incorporating elements of music, union, and autumn. Use warm color tones like oranges, reds, and yellows. The composition should include musical notes, instruments like guitars or violins, and fall leaves gently scattered across the background. A central element could be a stylized tree with branches forming musical staff lines, symbolizing the fusion of music and nature. The overall look should be elegant and inviting, conveying a sense of community and artistic expression, A whimsical illustration of two cellos on either side of a tree with autumn leaves, colorful and musical theme
