What are some alternatives?
When comparing Midomi and Serendipity by Spotify, you can also consider the following products
Shazam - Shazam is a mobile app that recognizes music and TV around you.
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
SoundHound - SoundHound - the most immersive music search, discovery and play experience on mobile.
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
MusicBrainz Picard - Official website for MusicBrainz Picard, a cross-platform music tagger written in Python.Downloads · MusicBrainz Blog · Picard 2.
Google Play Music - Free radio for everything you do. Store 50,000 tracks from your personal collection. Subscribe for on-demand access to 40 million songs and offline listening.