Detour - Immersive audio walks, now in 17 cities
Spotify - Map shows when two people play same song at same time
Guides by Lonely Planet - Explore city guides curated by experts.
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
Flamyngo - Create a city guide with help of your friends.
SoundCloud - Enjoy music & follow favourite artists