SGR-1 Real Samples - all recordings published before 1923, US public domain
(pre-1923 sound recordings entered the public domain Jan 1 2022 under the
Music Modernization Act). Transfers from the Internet Archive's Great 78
Project (George Blood collection). 48s excerpts, normalized. Free to sample.

band-semper-fidelis-1914.mp3           Semper Fidelis - Regal Military Band (Sousa) (1914)
classical-marimba-sousa-1918.mp3       Stars and Stripes Forever - Imperial Marimba Band (1918)
band-el-capitan-1919.mp3               El Capitan - U.S. Military Academy Band (Sousa) (1919)
banjo-dixie-medley-1914.mp3            Dixie Medley - Fred Van Eps (1914)
banjo-dalys-reel-1917.mp3              Daly's Reel - Van Eps Banjo Orchestra (1917)
blues-beale-street-1918.mp3            Beale Street Blues - Wadsworth's Novelty Dance Orch (W.C. Handy) (1918)
blues-hesitation-blues-1919.mp3        Hesitation Blues - Lt. Jim Europe's Hell Fighters Band (W.C. Handy) (1919)
blues-yellow-dog-1920.mp3              Yellow Dog Blues - Selvin's Orchestra (W.C. Handy) (1920)
blues-creole-blues-1920.mp3            Creole Blues - United States Hotel Orchestra (1920)
blues-aunt-hagars-1921.mp3             Aunt Hagar's Blues - Kentucky Serenaders (W.C. Handy) (1921)
dance-whispering-1920.mp3              Whispering - Paul Whiteman & His Ambassador Orch (1920)
dance-wigwam-1920.mp3                  Wigwam - Joseph Samuels Orchestra (1920)
dance-carolina-morning-1922.mp3        Carolina in the Morning - Paul Whiteman & His Orchestra (1922)
dance-who-1922.mp3                     Who Believed in You - California Ramblers (1922)
hawaiian-dreams-1920.mp3               Hawaiian Dreams - Hawaiian Guitar Duet (1920)
hawaiian-kilima-1921.mp3               Kilima - (steel guitar) (1921)
hawaiian-aloha-oe-1922.mp3             Aloha Oe - Ferera & Franchini (1922)
hawaiian-o-sole-mio-1922.mp3           O Sole Mio - Sanella & Bolognese, steel guitar (1922)
jazz-boogie-rag-1917.mp3               Boogie Rag - Wilbur Sweatman's Jass Band (1917)
jazz-johnson-jass-1918.mp3             Johnson Jass Blues - Frisco Jass Band (1918)
jazz-rajahs-dwell-1919.mp3             Rajahs Dwell - Louisiana Five (1919)
jazz-tiger-rag-1922.mp3                Tiger Rag - Friars Society Orchestra (1922)
jazz-hot-lips-1922.mp3                 Hot Lips - Eddie Davis Orchestra (1922)
opera-caruso-una-furtiva-1911.mp3      Una furtiva lagrima - Enrico Caruso (1911)
opera-bell-song-1917.mp3               Bell Song (Lakme) - Amelita Galli-Curci (1917)
opera-laughing-song-1917.mp3           Laughing Song - Amelita Galli-Curci (1917)
opera-un-bel-di-1922.mp3               Un bel di (Butterfly) - Amelita Galli-Curci (1922)
ragtime-russian-rag-1919.mp3           Russian Rag - Lt. Jim Europe's Hell Fighters Band (1919)
latin-tango-argentino-1912.mp3         Tango Argentino - Beka London Orchestra (1912)
latin-el-choclo-tango-1914.mp3         El Choclo - The Peerless Orchestra (1914)
vocal-night-descends-1920.mp3          When Night Descends - John McCormack & Fritz Kreisler (Rachmaninoff) (1920)
vocal-your-eyes-1920.mp3               Your Eyes Have Told Me So - John McCormack (1920)
waltz-heartsease-1918.mp3              Heartsease - Peerless Orchestra (1918)
waltz-wiener-bonbons-1921.mp3          Wiener Bon-Bons - Joh. Strauss (1921)
waltz-kiss-in-dark-1922.mp3            A Kiss in the Dark - Markel's Orchestra (Victor Herbert) (1922)

Source: archive.org/details/georgeblood

Modern tracks (Internet Archive netlabels collection; CC0/public domain or CC-BY as noted):
hiphop-tin-ear.mp3                     Tin Ear - Deadman & Digi Hartatak () [CC-BY] http://creativecommons.org/licenses/by/3.0/
house-funky-louie.mp3                  Funky Louie - Digi Hartatak (2008) [CC-BY] http://creativecommons.org/licenses/by/3.0/
techno-technae-remix.mp3               Technae Remix - Digi Hartatak Featuring Power Switchblade () [CC-BY] http://creativecommons.org/licenses/by/3.0/us/
trance-the-remixes.mp3                 The Remixes - Marc Burt (2009) [CC-BY] http://creativecommons.org/licenses/by/2.0/uk/
electro-raw-cutz.mp3                   GeoSuPhat - Raw Cutz - George P. Peterson (2008) [CC-BY] http://creativecommons.org/licenses/by/3.0/
industrial-magnitudo.mp3               [GT414] Antelikteram - Magnitudo - unknown artist (2012) [CC0/PD] http://creativecommons.org/publicdomain/zero/1.0/
ambient-rain-tear-drops.mp3            [GT577] Noisesurfer - Rain Tear Drops - Joachim Rontxelius (2012) [CC0/PD] http://creativecommons.org/publicdomain/zero/1.0/
dnb-for-the-lulz.mp3                   [GT473] Pogohm - For The Lulz! - Arnaud Barbe (2012) [CC0/PD] http://creativecommons.org/publicdomain/zero/1.0/

Genre loops from Freesound.org, all CC0 (public domain dedication):
hiphop-loop.mp3        "Lofi Drum Loop 70 BPM.wav" by holizna (freesound.org/s/629140/) [CC0] dur=13.7s bpm=70
techno-loop.mp3        "[Drumloop] 128 bpm edm drum loop 014" by waveplaySFX (freesound.org/s/547360/) [CC0] dur=7.5s bpm=128
latin-loop.mp3         "Percussion Loop.wav" by Johnnie_Holiday (freesound.org/s/552384/) [CC0] dur=16.8s bpm=100
classical-loop.mp3     "Orchestral Strings Loop" by Usilaya (freesound.org/s/546205/) [CC0] dur=21.3s bpm=90
opera-loop.mp3         "Choir Loop Big Hall reverb" by szegvari (freesound.org/s/516210/) [CC0] dur=8.6s
reggaeton-loop.mp3     "Reggaeton groove (105 bpm - 4 bars).wav" by c0mp0s3r (freesound.org/s/177422/) [CC0] dur=9.1s bpm=105