The Google search offers several extra features: the latest addition from BigG is a tuner for musical instruments (or even for the voice) that works directly in the browser.
The operation is extremely simple: in fact, just type Google Tuner in the search bar and authorize, by clicking on the microphone icon, to record sounds and that's it. The tuner shows the currently played note and informs the musician when to raise or lower the tuning .
For correct operation it is obviously recommended to use a smartphone or a PC with a good microphone, while there are no problems with the browser, since the tuner works both from Chrome (and Chromium-based browsers) that you Safari and Firefox.