There have been lyric posts and a few threads mentioning the legendary Irish tenor John McCormack, so I assume there are list members who appreciate his art.
Marston Records has just released a massive 16 CD collection of
his Electrical recordings for Gramophone (HMV) and Victor, with supplements which include his very first acoustical recordings on cylinder and disc from 1904/1906, and most of the extant broadcast recordings.
McCormack - Electrical recordings, first recordings, airchecks
https://www.marstonrecords.com/collections/frontpage/products/mccormack-patrician

With the release of this set, almost every McCormack recording is
now available.

A few years ago Marston issued all the ODEON recordings, and
NAXOS has issued the acoustic Gramophone and Victor sides.

McCormack - ODEON recordings
https://www.marstonrecords.com/collections/singer/products/mccormack

McCormack - acoustic recordings (Naxos)
https://www.amazon.co.uk/s?k=john+mccormack+naxos&i=popular&ref=nb_sb_noss_1

The John McCormack society has an online discography here:
John McCormack discography

McCormack appeared and sang in 2 motion pictures, both have been
available on DVD, selections may be found on youtube.
Song O' My Heart (1930)
    TCF - Murnau & Borzage at Fox (12 DVD box)
Wings of the Morning (1937)
    KINO - paired with St.Martin's Lane (out of print)

Thomas.