• Portable headphones became smaller and eventually lead to earbuds and in-earphones.
• In 2001 Apple introduced the iPod, and later iPhone and iPad, comes with a set of white earbuds.
• 2008. Hip hop artist and producer Dr. Dre and Interscope ...

Steve Jobs, who received a Walkman from the Sony head, Akio Morita, himself, chose to dissect it piece by piece, understanding the machinery behind it. Twenty years later he debuted the iPod, his own version of the portable music player, which had a hard-disk at that time.

Users of streaming services generally fell somewhere on the following spectrum:h throughout:  

Hoarders:

• Have a large library that they add to from time to time
• Are more selective about what they listen to

Nomads:

• R...