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In page Oxford Records:

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Oxford discs contain the same material as released by the producing company. For the most part the titles released were popular items that were deemed likely to sell over a long period of time. A few sides from Columbia's ethnic matrix series were also released.[1] Artists are usually generic (i.e. "band", "banjo solo" "baritone") for the earlier pressings. These were the studio ensembles of the recording company and musicians commonly used by all record companies of the time such as Vess Ossman and Arthur Collins.[2] Later Columbia pressings often gave artist credit when such artist was not under exclusive contract to Columbia at the time.