The Shazam app allows users to identify songs within one second of hearing a sample, providing the song title, artist, and options to listen to more of the song, view lyrics and videos, or purchase the song. The app also enables identification and discovery of TV shows, and allows users to save song clips, see lyrics while listening, share song tags on social media, and discover new music through friends and charts. The document encourages downloading the Shazam app to take advantage of its music and TV identification and discovery features.