How music has evolved / Convergence

How music had evolved?

Pop music emerged in the United States in the early 1950s with the birth of rock 'n' roll. In the mid 1950s, the popularity of radio hits like Bill Haley and His Comets' "Rock Around the Clock" moved rock music into the mainstream. Elvis Presley became the first American rock star and the Beach Boys formed one of the first popular boy bands. However, in the late 1950s, the prevalence of popular rock music began to decline and a wave of camera-friendly teen idols began to dominate the music scene. This rise of palpable pop music catered to the tastes of white middle-class teenagers who craved a new medium of entertainment.

Convergence:

is where the technology which is capable of several functions.
For my research an example of this is IPODS.
Ipods are capable of many functions such as:
Storing photosAble to connect to the radio
Able to play videosPlay games
Pod casts - a media player that is distributed over the internet.
In January 2007 apple announced the IPhone, a device that combined the features of the video-capable iPod with mobile phone and mobile Internet capabilities.