22. Alexander Ljung, SoundCloud, Founder/CEO
Sound designer Alexander Ljung and artist Eric Wahlforss, Swedes in Berlin, wanted to make something like a Flickr for the electronic-dance musicians they loved. Prior to launching SoundCloud in 2007, they handed out free accounts to several influential DJs and producers in hopes that they'd upload tracks and mixes – and that number has continued to balloon ever since. So has SoundCloud, under Ljung's direction – the company now employs more than 100 people and is the go-to for every record label and artist, in every conceivable style, to showcase their goods. More to the point, it's impossible to imagine EDM's rise without the instant streaming (and easy downloading) that the platform made possible. With one cleverly designed page, SoundCloud made collecting DJ sets, once a minority pursuit, into something anyone could do.