There's been so few recordings made of Allegri's 'other' music. I wonder why? Could the Vatican be partly responsible? I wonder if they've kept any of his 'other' music 'unpublished', as they once did with his "Miserere"? Or, historically speaking, have other collectors of Allegri's music followed the Vatican's example, and kept other works similarly 'unpublished'? For example, I see there is a CD recording of 'unpublished' Allegri works from the "Collectio Altæmps", performed by the group Musica Flexanima. Or, is it because early music groups generally find Allegri 'other' works to be mostly of a lesser quality?
The A Sei Voci disc, which contains Allegri's Missa Vidi Turbam, is the only CD I've ever heard of 'other' music by Allegri. It's also one of the few discs by A Sei Voci that I've liked. As it turns out they're actually fine singers, when they don't sing with their children's choir (which was one of the reasons why I didn't care for their Josquin series, unfortunately). By the way, it's been reissued (at a reasonable price), if anyone's interested:
https://www.amazon.com/Allegri-Mise...rd_wg=XRgGP&psc=1&refRID=0N4WVS8Y2CE6B91VGTR0
https://www.amazon.com/Allegri-Mise...d=1518979933&sr=1-9&keywords=gregorio+allegri
Other than that--apart from an old George Guest Choir of St. John's College, Cambridge recording of Allegri's "Missa Vidi Turbam" (on the Meridan label), I can only find three additional recordings of other works by Allegri. For starters, I'd be most interested to hear the The Cardinall's Musick sing Allegri's "Lamentations of Jeremiah":
https://www.amazon.com/Miserere-Mus...=1518980746&sr=1-19&keywords=gregorio+allegri
https://www.amazon.com/Masses-Motet...d=1518980949&sr=1-6&keywords=gregorio+allegri
https://www.amazon.com/Allegri-Unpu...=1518979615&sr=1-16&keywords=gregorio+allegri
https://www.amazon.com/Josquin-Desp...=1518981890&sr=1-11&keywords=gregorio+allegri
Has anyone heard and liked any of the above recordings"
As for Allegri's more famous "Miserere", the 1980 Tallis Scholars recording has long been one of my favorite discs by the group, and their Miserere was my favorite performance for several decades. The Palestrina & Mundy works are also very worthwhile (esp. the Mundy "Vox Patris Caelestis", another under recorded composer, who has me asking the same question--did he compose any other masterpieces?). By the way, it was the Tallis Scholars' first recording:
https://www.amazon.com/Allegri-Mise...78737&sr=1-1&keywords=gregorio+allegri+tallis
However, in recent years, I've come to like a Miserere performance from Magnificat, led by Philip Cave, at least as much (but don't bother looking for Volume 2 of this series, as it never came out).
https://www.amazon.com/Europes-Gold...=1518977648&sr=1-27&keywords=gregorio+allegri
There's also an excellent disc from Andrew Parrott and the Taverner Consort singing music of the Sistine Chapel, entitled, "Musica della Cappella Sistina" that includes a very beautiful rendition of the Miserere, along with other works that were 'privately' composed for the Pope's chapel:
https://www.amazon.com/Allegri-Sist...r=1-1-fkmr0&keywords=gregorio+allegri+parrott
Though I've not heard it yet, there's also a recent recording by the Sistine Chapel Choir in the Sistine Chapel (the first studio album ever recorded there), which evidently uses an "unpublished" and previously "unheard" edition of Allegri's Miserere. Could this be connected to the secret, unpublished Vatican score that the young Mozart once heard, memorized, & stole in the 18th century? Has anyone heard this recording?
https://www.amazon.com/Cantate-Domi...=1518978780&sr=1-12&keywords=gregorio+allegri