I don't recall the very first time I opened the Shazam app. But I do remember back in the early days of the iPhone, it felt like a little bit of wizardry in my hand to be able to, in a few seconds, extract the name of the band whose song was playing on the car radio or bar stereo from the tip of my tongue. Truth is, it still does. And that's precisely why most of the company's users--100 million per month, per statistics it just released--still use the Shazam app.