one day before the recording of "A Little Bit Bad." According to Rust the trumpet players are Hymie Farberman and Leo McConville or Mike Mosiello. I think it is Hymie Farberman in the Bixian solo. The trombonist is Miff Mole.
And here are the California Ramblers on April 26, 1926, a couple of months after the recording of "A Little Bit Bad."