My brother complained his MP3 player wasn’t loud enough.
So I designed a battery-powered amplifier based on a design online. That worked, so I designed a bunch of other things, helped found an organization to learn to design more things, and teach other people to design and make things. Ended up speaking at a couple of conferences. Then I immigrated to Vietnam so I could start a tech company where more things are made, so I could design and make even more things.
Lost every dime, until I figured out how to run a business, made it all back by designing and making yet more things. Created some jobs! Met someone doing related volunteer engineering work and am now married. We are designing a house, but will probably hire someone to make it for us.
I’ve never owned an MP3 player and don’t listen to music.