As you might know, Spotify is a veritable treasure trove of Baroque music... if you can find it! The metadata situation there is abysmal, and you simply will miss many recordings if you search by composer / performer. In this thread I would like to share some information about CDs which may be of interest to Baroque enthusiasts, which are definitely not well known, and which are available legally for free for any Spotify subscriber. (Or completely free, with ads between every 5 tracks or something, if you don't want to pay.)
THE XVIII CENTURY CANTATAS FROM GDANSK
The Sarton label has published a few CDs with XVIIIth-century cantatas from Gdansk (Danzig), under A.M. Szadejko.
'The Gdansk Baroque Cantatas': https://open.spotify.com/album/6V6GXRaHpw7XAGdx5E8S8w
'Lent Cantatas of 18th Century Gdansk': https://open.spotify.com/album/3WnBqSwqXGvoBDNOHSfesa
'Christmas Cantatas of 18th Century Gdansk': https://open.spotify.com/album/0rgxnWCsxcZgy28AOmeGWG
'Passio Christi by Johann Balthasar Christian Freisslich': https://open.spotify.com/album/5ChU1eRefpMBwYs2lZZmKy
'Easter Cantatas of 18th Century Gdansk': https://open.spotify.com/album/7oxOVAdytYvT50v9g5P490
All those are worth hearing. I hope we get more recordings of composers like Du Grain or Pucklitz (with his interesting take on 'Jesu, meines Lebens Leben' on the 'Lent cantatas' disc).
ALSO FROM GDANSK
'Du Grain: Complete Harpsichord Concertos': https://open.spotify.com/album/7tg1XmnLsiyAUfX4Y5FU4M
'Organ Fugues of the Czech Baroque and Classicism': https://open.spotify.com/album/4o53kRc9GQhj7racfSSW5y (no metadata at all! This disc will come up in NO SEARCH apart from "label:supraphon, which is how I found it. There is NO information about the composers!)
'Czech Organ Music of Baroque and Classicism': https://open.spotify.com/album/7b7wsSGhFlgR3HMjK5fxMx (a different disc, with some data regarding the composers)
'Czech and Moravian Baroque Organ': https://open.spotify.com/album/69OfzRwauWyNfydURthvgh [a vinyl classic by J. Reinberger]