Complex sentence: For most of 1923, her records were issued on Columbia's regular A- series; when the label decided to establish a "race records" series, Smith's "Cemetery Blues" (September 26,1923) was the first issued.
Split into simpler sentences: For most of 1923, her records were issued on Columbia's regular A-series. When the company established a "race records" series, Smith's "Cemetery Blues" (September 26,1923) was the first issued.