This app can get addicting. Whether you’re at a restaurant, club, or sitting in the car, you’ll want to power up Shazam to satisfy everyone’s curiosity about that song playing in the background. Hold your iPhone up to the speakers, press “Tag Now,” and Shazam will listen to the tune. Give it 10 seconds to process the music, and it will give you an answer. Usually, Shazam returns an album cover, along with a link to the iTunes store or a YouTube video. Sure, sometimes it fails, but overall it is rather accurate. Nothing beats instant gratification!