Short answers, pulled from the story.
Musikmarkt was a German-language trade magazine covering the music industry in Germany, Austria, and Switzerland, based in Munich. It was founded in 1959 by publisher Josef Keller Verlag and ran until July 2016. Die Welt described it as the music industry's thermometer.
Musikmarkt closed in July 2016. Both the print magazine and its website shut down at the same time. Stefan Zarges was the last editor of the publication.
Musikmarkt determined the official German music charts from its founding in 1959 through the 1970s, when Media Control took over that responsibility. During its weekly publication period, it also carried its own Top-100 charts for singles and albums.
Uwe Lencher served as editor-in-chief for twenty-three years, from 1973 until his death in April 1996. Under his editorship the magazine reached a circulation of nearly twelve thousand copies.
Musikmarkt had a circulation of four thousand three hundred and seventy copies when it shut down in 2016. At its peak under editor-in-chief Uwe Lencher, circulation had reached nearly twelve thousand copies.
Musikmarkt began as a bi-monthly publication, then shifted to a weekly schedule. In 2014, two years before closing, it reduced its frequency to monthly.