The phrase "are mostly recorded" is correct and usable in written English.
It can be used when discussing the general state or condition of something that has been captured or documented, often in the context of data, events, or media.
Example: "The interviews for the documentary are mostly recorded, but a few were conducted live."
Alternatives: "are primarily documented" or "are largely captured".
Otherwise, the podcasts are mostly recorded in Mr. Dalton's unprepossessing studio apartment on the Upper East Side of Manhattan, where he lives with his wife, Ayako, a private chef, and their young son, Louie.
Although data are mostly recorded by trained collectors, the specific accuracy of diagnostic coding for DKA has not been independently verified.
To our knowledge only few studies have examined the arch of the foot sole with respect to normal QST values, and those existing are mostly recorded from the dorsum of the foot [ 26, 31, 32].
Crucially, these aren't anthropological field recordings; they were mostly recorded for custom pressing plants, with intentions evangelistic or commercial (or both).
Coastal floods were mostly recorded in regions which border the North and Baltic seas.
Even though "Future Brown" was mostly recorded face to face, in a physical studio, there's little feeling of specificity.
(There was Radio 3's The Spirit of Schubert in 2012, but that was mostly recorded performances, broadcasting nearly every note that Schubert wrote).
Engineered by the son of Blue Nile producer Calum Malcolm, Mid Air was mostly recorded in Buchanan's flat, working "civilised hours" over a couple of years.
Unlike the original Basement Tapes, which were mostly recorded in the basement of the Band's Big Pink house, these new sessions are being laid down at Hollywood's Capitol Studios.
Its eight untitled tracks were mostly recorded during the To Pimp a Butterfly sessions in late 2014, and range from casual studio demos to fully fledged, gorgeously produced songs as fleshed out as anything on the album they were cut from.
Critics and public were unanimous in acclaiming him the finest interpreter of Berlioz of the age; concert performances of the operas and the pick of the major orchestral works and dramatic cantatas were mostly recorded for posterity (though not the first, ideally cast Barbican Benvenuto Cellini, perhaps the gem of the entire series).
