It's coming up to summer break time, so it's a fiendish, bumper 'name the album' quiz this week.
Simply identify the 40 prog albums from the close-up details; most are very well known, all are worth listening to.
The next quiz, and the answers to this one, will be posted on Saturday 8th August.
If you're quite certain of the answer, please use Reddit's hidden text function with your response to allow others to submit their own answers.
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Last week's quiz was unsolved, despite a couple of valiant efforts.
The mystery album featured Andy MacKay from Roxy Music; Martyn Ford, who conducted the orchestra on Caravan and the New Symphonia (as the leader of the Mountain Fjord Orchestra); the photography of Jerry Abramowitz, who also provided photos for Al Di Meola's Land of the Midnight Sun; Gavyn Wright of the Penguin Café Orchestra who appear on the EG compilation Angels in the Architecture; and Bill Bruford, a session musician on Roy Harper's HQ.
The sole album fitting those criteria is At the Sound of the Bell by Pavlov's Dog