It was actually 1949-50. I misremembered. “Birth of the Cool” is also on Wiki. The sessions came out on 78s, but the whole thing wasn’t released on an LP until 1957. And of the course the expanded CD contains both the studio and live performances, and is available on Spotify.
In the olden days, the tuba was the bass. The term “brass bass” arose to differentiate from the string bass, which had supplanted the tuba entirely by the mid-1930s. In “modern” jazz, post WWII, the tuba was reintroduced as a harmony instrument, to add color and more varied timbre to the ensemble. See Miles Davis’ “Birth of the Cool” sessions from 1948-49. Gil Evans and Gerry Mulligan were two of the best arrangers for tuba-inclusive charts.
It was actually 1949-50. I misremembered. “Birth of the Cool” is also on Wiki. The sessions came out on 78s, but the whole thing wasn’t released on an LP until 1957. And of the course the expanded CD contains both the studio and live performances, and is available on Spotify.