Xmind - Xmind is a brainstorming and mind mapping application.
Spotify - Map shows when two people play same song at same time
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
SoundCloud - Enjoy music & follow favourite artists
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.
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