Genius

If you want to learn the lyrics to a particular song or your just want to finally know what your favorite band is singing about, then you don’t have to look any further than the Genius app. With a collection of more than 1,7 million songs, it’s unlikely that you won’t find what you are looking for.
The application also features verified content from artists and producers but also has a recognition feature that allows users to match the lyrics to the song playing on the phone, from services such as Spotify, Pandora, Play Music, Soundcloud, and a few others.
In fact, it’s possible just to let the application listed to the song with the help of the microphone, and it will identify it for you.