Google Glass is about to get even more apps, from Facebook and Twitter to Tumblr and CNN. During a “Developing for Glass” session during its Google I/O conference on Thursday, Google announced several big-name apps for the high-tech glasses, representing a vote of confidence for the technology from a number of the industry’s largest players.

Google Play Music All Access, Spotify, iTunes Radio and Rdio: if we want to think about the future of the music, it is almost certainly going to be on-demand. Nowadays, more than during last years, there are many ways to listen music on-demand.