Apple’s musical social network Ping is getting integrated with an actual social network, Twitter. Twitter announced that users of Ping and Twitter would be able to link their respective accounts from within iTunes. Once linked, users have the ability to alert their followers of songs, artists, or albums they like or review. As Twitter explains, activity on Ping will be tweeted to your Twitter followers and include playable song previews and links to purchase and download music from iTunes. The new feature is available in all 23 countries where Apple’s iTunes Music Store is offered.