Back before television, the radio served the purpose of supplying scripted entertainment over the airwaves. While such programs are still made today (particularly in Britain), ask anybody under the age of 40 if they listen to the radio for anything other than music, sports andRush and you will most likely get a confused stare. "Dramatic series? Sitcoms? Game shows? On the radio? Leave me alone, old man!" There has been a minor revival in the form of podcasts, but it's still a very niche market.
Somewhat averted as previously mentioned in the UK, due to the continuing popularity of the likes of Radio 4 and the BBC's public service mandate including the provision of such. Radio 4 is seen to an extent as being somewhat middle-aged, middle-class and intellectual, though, and commercial broadcasters shy away from spoken word entertainment as it isn't really profitable (the one station which tried this, a digital station named Oneword, is no longer on the air).
The "Better Music Mix" format, a format expanded into the United Kingdom (but not Scotland or Northern Ireland) as "Today's Best Mix / Best Mix of the 80s, 90s and Today / More Music Variety", which was pioneered by Australian radio in the late 1980s - early 1990s. Nowadays it's almostDeader Than Disco, a Dead Horse Genre, but not quite. The fact that all the former GWR Group stations (except Leicester Sound, RAM FM, Trent FM) are now branded Heart (a female-skewed, softer-music format) with "more music/less talk", shows that Dead Horse Genre applies. The new Capital Radio has made Galaxy's "hotter dance/House Music format" almost a Dead Horse Genre.
The "local radio" and "personality disc jockey" genre has largely disappeared in the United Kingdom, to be replaced by big-box brands like Heart, Capital and Gold, with only UKRD, UTV and Bauer Media averting this trope. Stations such as The Pulse of West Yorkshire and Key 103 prove that this trope isn't entirely Deader Than Disco - but the trope of Deader Than Disco has been lampshaded by their DJs many, many times. With speculation that Real Radio is set to disappear as a result of the GMG takeover, this could prove to be the final nail in the coffin. This prompted a huge internet backlash in social media, namely a British showbiz site, where people predicting "Real Radio will become Heart" ended up creating a "Funny Aneurysm" Moment - although, with the Competition Commission assessing the merger, we shall see how this situation plays out.
Before the birth and mainstream acceptance of Rock And Roll, a staple of radio was the "Hit Parade." This was a listing of songs that were ranked in terms of popularity and/or airplay. You see, from the mid-1930's until about the late-1950's, a hit song was generally published in sheet music format and then performed by multiple artists. If the song proved popular enough (among both listeners and performers), it was ranked on Billboard's "Hit Parade." This trend began to decline during the late-1950's, when the popular rock and roll songs of that era proved to be very difficult for bands outside the genre to perform. The failure of big band singer Snooky Larson to cover "Hound Dog" by Elvis Presley is believed to have been the final nail on the coffin. It was eventually replaced with The Billboard 200 and its many sub-listings.