Miles Davis' - Kind of Blue 

Miles Davis’ Kind of Blue is widely regarded as the greatest and most influential jazz album ever recorded, serving as the definitive masterpiece of modal jazz. It revolutionized the genre by replacing complex, rapid chord changes with slower, scale-based improvisation, creating a spacious, relaxed, and "cool" sound. 

The album cover features a striking, moody photograph of Miles Davis playing his trumpet with his eyes closed, bathed in blue and black tones—using a minimalist, high-contrast, and deeply artistic visual style.