QiiQoo VS Gracenote Music Recognition

Shazam - Shazam is a mobile app that recognizes music and TV around you.

ACRCloud - Automatic Content Recognition (ACR) cloud services for Audio Recognition ( identify music, ads ), Broadcast Monitoring, Second Screen, Copyright Protection.

AHA Music - AHA Music is a music identifier on Chrome, it detects songs playing on your browser with Spotify...

AudioTag - AudioTag.info — is a free music-recognition service.

AudD - Basically, Shazam API. Recognize music in microphone recordings, audio files, and UGC. Identify songs playing on radio stations and audio streams. Or make your own music recognition app. Recognize music from social networks and analyze trends.

Music Recognition - Music Recognition is a best-in-class application that identifies music of different categories in a quick and best way.