“Summer Jam TWO DAYS · ONE GROOVE AUGUST 14–15, 2027 RIVERSIDE FAIRGROUNDS · AUSTIN, TX LIVE MUSIC · FOOD · LOCAL ART”是使用 FontVibe AI 创作的复古文字效果。衬线大写字母凸版压印进米色棉卡纸，墨色略有破损，放在旧印刷机台面上，周围散落金属活字。

Create a complete 2:3 vertical vintage 1970s music-festival poster, with clear readable typography and a print-ready composition. Render only these exact text strings, spelled and punctuated exactly as shown: headline “Summer Jam”; subhead “TWO DAYS · ONE GROOVE”; details “AUGUST 14–15, 2027”; details “RIVERSIDE FAIRGROUNDS · AUSTIN, TX”; footer “LIVE MUSIC · FOOD · LOCAL ART”. Give “Summer Jam” the largest type, occupying the upper-middle area. Use wide, rounded 1970s display letterforms with a high x-height, organic bouncing curves, generous open counters, and softly flared trumpet terminals. Print the headline in faded burnt-orange ink with a visibly pressed letterpress impression; preserve the rounded groovy letter shapes. Set the supporting lines in smaller, sturdy, highly legible vintage display lettering in deep forest green and dark navy. Keep all lettering crisp and correctly spelled. Build the scene on aged cream cotton paper with subtle foxing, paper fibers, worn edges, and restrained ink breakup. Behind the title and below it, place a large concentric sunset disc in muted faded red, antique gold, and forest green, with a small, simplified outdoor concert stage silhouette and two speaker stacks as the central subject. Add a few sparse, screen-printed musical-note and starburst ornaments, not extra words. Use warm amber side light, shallow paper relief shadows, gentle print misregistration, and fine analog grain. Keep the composition like a finished heritage festival handbill: generous outer margins, a strong title block, a distinct illustrated subject block, and a neat bottom information stack. Muted, time-softened colors only; no neon, no modern gradients, no extra text, no logos, no photographic crowd.