Hitlisten (The Hit list) is a Danish top 40 record chart that is presented every Thursday midnight at hitlisten.nu. The weekly Danish Singles Chart also known as Track Top-40 combines the 40 best selling tracks from legal music downloads and the sales of music singles on either CD or vinyl. The data are collected by Nielsen Music Control, who also compile the chart on behalf of IFPI (International Federation of the Phonographic Industry).
This chart began in April 1965 as a monthly top 20 chart compiled by the Danish branch of the International Federation of the Phonographic Industry (IFPI). It was published in several major Danish newspapers. Prior to that several Danish charts were compiled by competing newspapers. From April 1969 it went weekly after Denmark's Radio stopped publishing their weekly top 20 chart. From May 1973 to December 1978 singles and albums were presented on the same chart due to a request from Denmark's Radio for variety in their chart show. During this period only few singles reached the top. The formats were finally split again in January 1979.
A record chart is a ranking of recorded music according to popularity during a given period of time. Examples of music charts are the Hit parade, the Billboard Hot 100 or Top 40.
Many different criteria are used in different charts, including sales of records, cassettes and compact discs, the amount of radio airplay, and since the introduction of digital technology, the number of downloads and the amount of streaming activity.
Some charts are specific to a particular musical genre and most to a particular geographical location (although download charts are not easily pinned down in this way). The most common period of time covered by a chart is one week with the chart being printed or broadcast at the end of this time. Summary charts for years and decades are then calculated from their component weekly charts. Component charts have become an increasingly important way to measure the commercial success of individual songs.