The eyes hit you first, or rather the wrongness of them. One stares left, the other rolls away, both bulging from sockets that look stretched to bursting. Below them the nose flares into cavernous nostrils, and then the whole face surrenders to the mouth: jaws wrenched apart, blunt white teeth bared top and bottom, a tongue curling against the lower lip. There is no background, no border, no escape. The terror swallows the entire square in washes of pink, raw red, and bruised lavender-purple.

This is the In the Court of the Crimson King cover, and the man who painted it was not a professional artist at all. Barry Godber was a computer programmer and a friend of lyricist Peter Sinfield. He had drifted into King Crimson's early rehearsals, and one day he carried this painting into the studio while the band were recording '21st Century Schizoid Man.'

The timing felt almost uncanny. Greg Lake remembered the band gathering around the canvas and realizing the screaming face matched, exactly, the very track they were cutting. The music was a violent collision of rock, jazz, classical and symphonic ideas, often called the first true progressive rock album, and here was a face that looked the way that song sounded.

What makes the image stranger still is that Godber painted himself. He worked from his own reflection in a mirror, so the panic frozen on the cover is a self-portrait pushed to the edge of hysteria. The outer face, the one you see, is the Schizoid Man. The gatefold opens onto a second face inside, the Crimson King. Robert Fripp later offered a key to reading it: cover up the screaming mouth, look only at the eyes, and an incredible sadness rises to the surface. The horror and the grief are the same face.

That reading carries a weight Godber never lived to feel. It was the only painting he ever made. In February 1970, just months after the album appeared, he died of a heart attack. He was 24 years old.

The canvas itself nearly didn't survive either. The original was sitting in the label's offices, kept under bright light that was steadily bleaching and damaging it. Fripp rescued it, took it into his own keeping, and owns it to this day, which is why the colors you see still burn with that fevered intensity rather than fading to ghosts.

The music inside earned its terrifying mascot. Released on 10 October 1969 by Island Records, it reached number five in the UK and number 28 on the US Billboard 200. AllMusic's Bruce Elder called it the band's definitive album and one of the most daring debuts ever recorded by anybody.

Look again at the painting and you feel that daring. Every surface ripples with watercolor texture, the cheeks mottled and feverish, the lips swollen, the skin stretched too tight over the bone beneath. The face is too close, too loud, too human. A young man held up a mirror, painted what he saw, and froze a scream that has not stopped echoing.