Shazam is a music recognition app now owned by Apple. It began in London as a UK text message service in 2002, where people dialled a short code and held their phone to the music. It became one of the first popular iPhone apps in 2008, and Apple bought the company in 2018.
Users tap a button and the app listens to a few seconds of a song, then names the track and artist. It can listen in the background and recognise songs playing in other apps. Results link to Apple Music and Spotify, show lyrics and music videos, and list upcoming concerts. Shazam charts show which songs are being identified most in each country and city, and record labels watch them to spot rising tracks.
Shazam is free and carries no ads. On iPhone it is also built into Control Centre, so people can identify songs without opening the app. It runs on iOS and Android, and there are versions for Mac, Apple Watch and a Chrome extension. Apple occasionally offers free trials of Apple Music to Shazam users.