Haeco-csg - Use of Haeco-CSG in Promotional Recordings For Radio

Use of Haeco-CSG in Promotional Recordings For Radio

The original intention of using Haeco-CSG on commercial LP releases was rather short lived, however, use of the process continued well into the mid 1970s on promotional records sent to radio stations. Many commercial FM Rock stations did not transition from mono to stereo broadcasting until the mid to late 1970s. AM Pop music stations continued to broadcast in mono, as AM stereo broadcasting was not introduced until 1982 and did not become popular until the mid 1980s.

Many promotional singles and some commercial singles from the Warner/Reprise/Atlantic label group from this era had "CSG Mono Process" or "CSG Process" printed on the labels. Artists included Frank Sinatra, Gordon Lightfoot, James Taylor, Seals and Crofts. Warner subsidiary labels such as Atlantic issued a series of mono radio station promotional LPs by Progressive Rock artists circa 1968-1970 which are now rare collectibles. The series included titles by Led Zeppelin, Yes and many others. In 1979 the Warner distributed label Sire Records issued a promotional single of "Pop Muzik" by M which contains both short and long versions in CSG processed stereo. This may be the latest known recording to utilize the CSG stereo process.