The Official Chart, broadcast on BBC Radio 1 and MTV Official UK Top 40 , is the UK music industry's recognised official measure of singles and albums popularity because it is the most comprehensive research panel of its kind, today surveying over 15, retailers and digital services daily, capturing The OCC website contains the Top chart. The chart week runs from Friday to midnight Thursday,  with most UK physical and digital singles being released on Fridays. From 3 August until 5 July , the chart week ran from Sunday to midnight Saturday. The UK Singles Chart began to be compiled in The company regards a selected period of the New Musical Express chart only from to and the Record Retailer chart from to as predecessors for the period prior to 11 February , where multiples of competing charts none official coexisted side by side. For example, the BBC compiled its own chart based on an average of the music papers of the time; many songs announced as having reached number one on BBC Radio and Top of the Pops prior to are not listed as chart-toppers according to the legacy criteria of the Charts Company. Before the compilation of sales of records, the music market measured a song's popularity by sales of sheet music. The idea of compiling a chart based on sales originated in the United States , where the music-trade paper Billboard compiled the first chart incorporating sales figures on 20 July
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Charts can turn music from an under-the-radar creation into an acclaimed piece of art, thanks to plays on radio airplay stations, social media rankings, digital downloads, streams on music streaming services , and more. Music charts tell most people what to listen to, and where the whole music industry is going for the time being. Charts are forever adapting to the music industry. Popularity nowadays is largely based on streams, YouTube views and even social media influence… so how have charts incorporated this into their rankings? Historically, music charts are lists based on popularity of songs and albums. They are showcased in order to highlight the trends of each era according to the level of consumption. In the modern day world, we are talking about physical sales, digital downloads and radio airplay. In the s, the UK Singles Chart was created.
7. "Don't" by Bryson Tiller
For Billboard, the year-old music trade publication, that was once a simple question. Its charts were based on the number of CDs, vinyl LPs or tapes that fans bought at stores. But compiling its weekly charts has only gotten more complicated with the rise of streaming formats — some free, some paid — and as record companies have found ways to game the system by including free downloads of new albums with the sale of merchandise or concert tickets. Starting Jan. User-generated content — like memes or cover versions — will not count.
The Billboard charts tabulate the relative weekly popularity of songs and albums in the United States and elsewhere. The results are published in Billboard magazine. Billboard biz, the online extension of the Billboard charts, provides additional weekly charts,  as well as year-end charts. The charts can be ranked according to sales, streams, or airplay, and for main song charts such as the Hot song chart, all three data are used to compile the charts. The weekly sales and streams charts are monitored on a Friday-to-Thursday cycle since July ; previously it was on a Monday-to-Sunday cycle. Radio airplay song charts, however, follow the Monday-to-Sunday cycle previously Wednesday-to-Tuesday.