A mid-century modern jazz festival poster with stylized mountains, a trumpet, and a trombone in a retro color palette.

Mid-century modern concert poster, 1950s–1960s style. Flat graphic design with bold geometric shapes. Abstract mountain forms combined with stylized brass instruments (trumpet and trombone) integrated into the mountains. Warm retro color palette: mustard yellow, teal, burnt orange, cream, and dark brown. Clean vintage sans-serif typography inspired by Saul Bass and classic jazz posters. See more