Home > Media Mentions > Post-Casey Kasem, what is ‘Top 40’ music, exactly?

Post-Casey Kasem, what is ‘Top 40’ music, exactly?

First published on http://www.csmonitor.com/

A former deejay in Flint, Mich., Kasem launched “American Top 40” in 1970, a time when commercial FM radio was entering its glory years. At that time, Kasem relied on data from the Billboard Hot 100 singles chart, which weighed its rankings based on songs played on jukeboxes, radio play, and sales at brick-and-mortar stores. That since has changed to reflect changing times: Billboard now constructs its chart using Nielsen SoundScan sales data, both at retail and digital outlets, as well as radio play and streaming services like Spotify and Pandora.

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