Google has rolled out an update to the Google Now service that lets you launch your currently-installed music apps with just one tap after making a search for a musical artist. Simply make a search through Google Now for an artist of your choice, and underneath information about them you'll see a "Listen on your apps" section with links to any apps that can play music fro the artist. For us, we see YouTube, Google Play Music and TuneIn radio, and when you tap on one it opens the app to that artist's page. Pretty slick.
The feature is only available in the U.S. for now, but we could easily see it expanding to other regions once the proper hooks are put in place to know what music apps are available in the region you're currently in. You don't need a specific update to the Google Search app to make this work either, making it even easier to roll out to new regions.