A new app from Apple is called “PING”
A social network for music.
iTunes Ping lets you follow your favorite artists and friends to discover the music they're talking about, listening to, and downloading. Ping already has millions of users—including over 2000 artists—and is growing fast
Ping on the go.
Ping is built into the iTunes app, so you can easily access every update, post, video, and more on your iPod touch or iPhone. Set up your profile on your Mac or PC to view Ping features on your mobile device.
Follow your favorite artists.
True fans know it all: What their favorite artists are playing—and when and where they're playing it. Set your inner groupie free by following your favorite artists on Ping.