Shazam Application is the one of the best Example for Application in Linked open data it takes the short sample music from the end user and identifies the song from datasets as well as link to purchase the album.
The user tags a song for 10 seconds and the application creates an audio fingerprint based on some of the anchors of the simplified spectrogram and the target area between them.
For each point of the target area, they create a hash value that is the combination of the frequency at which the anchor point is located, the frequency at which the point in the target zone is located, and the time difference between the point in the target zone and when the anchor point is located in the song.
Once the fingerprint of the audio is created, Shazam starts the search for matches in the database. If there is a match, the information is returned to the user; otherwise it returns a “song not known” dialogue.