Applications Built On Our Platform

Over 350 applications have been built using The Echo Nest's music data APIs and developer toolkits. Here are some of our favorites.


Matt Ogle

What's in a key? Are you a major or a minor person? Are there keys that define your music taste or are there no patterns at all? I've always been mildly curious about questions like this, so when I discovered the Echo Nest had a new search API that could retrieve key and mode information from song titles alone, I jumped at the chance. The project also fit my two other music hack day criteria, namely being utterly useless and involving colourful pie charts. Features: Takes your username as input and retrieves your "favourite songs" by combining your top 50 tracks by playcount (overall) your top 50 tracks by playcount (last 6 months) your last 50 loved tracks and then removing duplicates. Queries the Echo Nest for key and mode information for each track, provides ive-updating pie chart of key distribution, gives a breakdown of major vs minor keys. The background gets lighter when it detects a major key, darkens for minor keys. Sample songs in the given key (plus mp3 samples, click to start/stop playback) when hovering over pie chart sections. Caches song/key data to speed up subsequent lookups.