In his spare time, Echo Nest developer Reid Draper built hotttnesss.com – a neat web app that shows the top 50 hotttest artists (according to the Echo Nest get_top_hottt_artists) along with sparklines showing the historical hotttnesss for the last week. Reid used the nifty jquery sparklines plugin to make it happen. Mouse over an artist name to get links to the Last.fm and Spotify pages for the artist so you can find out what the big deal is about Broken Bells or lyaz.
Music Machinery 