Shazam is a music recognition app that can be used to identify songs on Instagram. To use Shazam, first open the app and sign in with your Instagram account. Then, select the song you want to recognize and press the Shazam button. The app will identify the song and give you a list of information about it, such as lyrics, artist information, and track information. You can also share the song with your followers by using the share button on the right side of the screen.