Google has renovated the look and functioning of the Sound searching in Marshmallow Preview 3. The Sound search provides you with the song information after listening your song.
The new update has brought new design and now even you can add 1×1 widget on your homescreen. Now the widget launches into the Google Search app’s sound recognition interface rather than inside the widget itself.
You can download the apk from the link below. Google has not rolled out any official update yet. We have to wait as it is only available in the Android 6.0 Marshmallow Preview 3.