
Shazam, the song recognition app that Apple acquired and built into iOS, just got a really big audio upgrade that makes it even more useful. You can now use it inside third-party apps to work out what audio is playing.
Shazam uses your iPhone or iPad’s microphone to listen to the sound around you, and it has a giant database of audio “fingerprints” that enable it to match the sound it hears with its extensive catalogue of tracks. When the sound it hears scores a hit in the database, it then tells you what the song is and who it’s by. It also adds it to a playlist in Apple Music so you can listen to it later.