#1 It analyzes what people all over the world are posting on Twitter with the hashtag #nowplaying (last 500 tweets) and tries to extract the artists and songs played using some heuristics.

#3 It plays a TOP song (Spotify 30 secs preview) by this target artist and at the end of the song the process restarts, analyzing again the last 500 tweets, computing the target artist and playing a song.

#2 Using artist similarities measures it chooses an artist that would be a good compromise for the music tastes of the people, in that moment, considering what they posted in the last 500 tweets.