交响乐音乐会海报

生成一张 4:5 竖版「交响乐音乐会海报」案例图，所属分类为「海报设计」。纵向交响乐海报，黑底，单张轮廓光照亮的小提琴弓特写，下方为骨白色大号衬线标题 夜曲第四号。画面需要完整呈现上述主体、构图、配色、材质、光线和整体风格；可见文字以自然简体中文为主，必要的技术缩写、代码、变量名、学术符号、单位、拉丁物种名或装饰性外文可保留。

A vertical concert poster, 70x100cm proportions, for a symphony performance. Centered on a deep ink-black background floats a single high-contrast photograph of a violinist's hand and bow caught mid-stroke, lit by a single hard rim light from the right, fine rosin dust visible in the beam. The image occupies the upper two-thirds and bleeds softly into black at the edges. Below, in a tall condensed serif, the title "NOCTURNES NO. 4" is set in warm bone-white, letter-spaced wide. Underneath, smaller all-caps metadata reads "RIVERMOUTH PHILHARMONIC / CONDUCTOR: A. HELLER / SAT 14 MARCH / GRAND HALL". A single thin gold hairline rule separates title from metadata. The bottom margin holds a small ticket-price line and a delicate engraved laurel mark. Paper texture is subtle uncoated stock, ink slightly debossed. Mood: solemn, refined, late-night. No other graphics, no gradients, no shadows.