The music discovery app SoundHound has gone hands-free, letting you search music, look up information and add songs directly to your Spotify playlist with "OK Hound..." voice commands. In a press release today, SoundHound announced that it's voice assistant technology has made its way into SoundHound's music discovery features. Whenever you have the app open, you can say "OK Hound..." and ask the app to play you a song (using YouTube), find an artist's latest song, learn information about musical artists, start a Pandora station and even add a specific song to your Spotify account. When you add a song to Spotify, it will show up in a dedicated SoundHound playlist so you always know where your newly-discovered songs will be. You can see how it all works in the video above. The update is live now for both iOS and Android devices.