Under individual works are listed all commercial recordings known to me. If you know of other recordings, please get in touch; smilarly, if you find errors or are able to provide actual recording dates.
Piano rolls made by Medtner and others are not listed unless a sound recording exists. They are listed in the BIRS article Medtner recordings.
Recording dates can be difficult to establish and some may be inaccurate. A number of dates are taken from the IPQ discography but I have found other dates in the article to be incorrect, though usually only by a year or two. The BIRS discography only dates non-commercial recordings. Dates given as circa are usually estimated from the release date. For Melodiya LPs many releases can be dated from the catalogue number. In a few cases the recording date is indeterminate, e.g. the Del Grande/Mishakov LP lacks any dates on the disc or cover.
Downloads are listed if this was the sole or primary medium of release, in addition to a few that are (legally) free. Some record companies license CDs for download. I have not attempted to list them as the number is continually growing; an online search will find them. Some vendors offer instant pay-per-track, while others operate a subscription service. There are of course many pirated recordings circulating on file sharing networks. Be warned that many mp3 files are digitised at bitrates below 256kbps, the minimum generally regarded as giving CD quality.
nla means the recording is not listed in the issuing company's current catalogue, without regard for whether it has UK distribution. A deleted CD is not given as nla if it is still available as a download. At present this applies mainly to deleted Chandos and CRD discs which can be purchased from the Chandos website, many of them in a lossless format.
Deleted CDs can often be obtained secondhand, and sometimes new from suppliers who acquire stocks of deleted items or "dead" labels such as Russian Disc. Amazon (.com, .co.uk and .de), ebay, russiandvd.com and MusicStack are good places to start.
For unfamiliar labels, a Google search will usually bring up a supplier. A useful set of links to record company websites is given by International Record Review although it is not comprehensive. Presto Classical, CD Universe and Crotchet sell lesser-known labels and some deleted issues.
Mejoueva's recordings on Denon and Wakabayashi, and Bekhterev's on the Camerata label, can be ordered online from HMV Japan. Amazon Japan will also deliver internationally, but their shipping charges are high.
A discography of commercial recordings of the solo piano works and concertos was published in the Autumn 1998 issue of International Piano Quarterly. An earlier discography (1978) covering all works was published in the BIRS journal. The latter includes BIRS tapes of BBC radio broadcasts and some private recordings by Edna Iles and others. Melodiya: a Soviet Russian L.P. discography lists Melodiya vinyl releases up to c.1975. The discography in Flamm's thesis gives a complete listing of Medtner's own recordings (taken from Barrie Martyn's BIRS article) and a partial list of other interpretations, without recording dates.
All of these sources have been consulted in the compilation of the present discography. Where possible I have checked the accuracy of the data against copies of the LPs/CDs or alternative sources. Significant errors (e.g. incorrect works) or discrepancies between the discographies are mentioned in the footnotes.