Digital Trends – Spotify launched in the United States a week ago on an invite-only basis, and has been getting a lot of coverage recently, including some rave reviews. The streaming music service can be used for free with ads, but also offers two paid subscription options that start at $4.99. Despite hurdles to sign up, in the time Spotify has been available in the United States, Billboard now claims that 70,000 users have signed up for a paid subscription.