"Okeh (General Phonograph Corporation, New York City) initiated a 8000 Race series in 1921, with the first releases featuring artists such as Ester Bigeou, Lizzie Miles, and Sara Martin."
"Okeh had further prominence in the demographic, as African-American musicians Sara Martin, Eva Taylor, Shelton Brooks, Esther Bigeou, and Handy's Orchestra recorded for the label. Okeh issued the 8000 series for race records. The success of this series led Okeh to start recording music where it was being performed, known as remote recording or location recording. Starting in 1924, Okeh sent mobile recording trucks to tour the country and record performers not heard in New York or Chicago. Regular trips were made once or twice a year to New Orleans, Atlanta, San Antonio, St. Louis, Kansas City, and Detroit."
"On November 12, 1925 Louis Armstrong and his Hot Five met up at the Okeh studio in Chicago, Illinois. They were to record their first tunes for Okeh Records. The record label had wanted to put together a band of New Orleans musicians to buy into the recent success of New Orleans-style music. Having heard this, Armstrong put together his own band of musicians, most of whom had played in King Oliver’s Creole Jazz Band."
Bix and Tram began recording for OKeh on Feb 4, 1927. All their recordings were issued on the OKeh 40000 series.
However, here is an ad for the OKeh 8000 Race series that includes one Bix and Tram record, OKeh 40772, "Clarinet Marmalade/Singin' the Blues."
You can see that all records in the ad belong to the 8000 Race series, except the Bix and Tram record. The publicists for OKeh must have felt that although "Clarinet Marmalade/Singin' the Blues." had not been issued in the Race series, the style of the record could appeal to the audience for the OKeh Race series.
Bix Beiderbecke and his Gang always recorded for the OKeh 40000 series. But on one occasion, using the pseudonym New Orleans Lucy Seven, they recorded two numbers in the OKeh 8000 Race Series, namely OKeh 8544.
|8544||NEW ORLEANS LUCKY 7||GOOSE PIMPLES||81568=B||Co35664||-||10/25/1927||JO TRENT-FLETCHER HENDERSON|
|8544||NEW ORLEANS LUCKY 7 (BIX)||ROYAL GARDEN BLUES||81519=B||-||-||10/5/1927||C.WILLIAMS-S.WILLIAMS|