Update: The launch event featured the likes of Beyoncé, Daft Punk, Jack White, Nicki Minaj, Madonna, Rihanna, J. Cole, Win and Regine from Arcade Fire, Usher and Alicia Keys.

Tidal is being described as a "platform owned by artists", which is why they had all those megastars sign a declaration on stage. It was a little bit creepy.

As previously mentioned, Tidal doesn't offer a free, ad-supported plan - instead you'll have to fork out $19.95 a month for high quality audio, or $9.95 for standard quality. The launch came with exclusives such as Daft Punk's Electroma film, a playlist by Beyoncé, a preview of Todd Rungren's Runddans collaboration with Lindstrøm and Emil Nikolaisen and loads more. Head here for more information.

In "face meets palm" news, Tidal have been accused of ripping off The Haxan Cloak in their promo video (below). The Haxan Cloak's original tweets have been deleted (illuminati, right?) - but his label Tri Angle Records had plenty to say about it.

Original Story

It was confirmed earlier this month that Jay Z had successfully purchased Aspiro, a Swedish company behind a couple of streaming services, one of them being Tidal. Today he's re-launching the service with a little help from his friends, a tweet revealing some sort of special launch event at 5PM EST today.

Other high profile artists, including Kanye West, Nicki Minaj, Madonna and Beyoncé, of course, have shown their support by changing their Twitter, and other social media, profile pictures to a turquoise square, with some of them posting about the launch, too (see a couple of tweets below).

Tidal offers hi-fidelity (i.e. CD-quality) audio and video, but it does not offer a free, ad-supported experience: you'll have to fork out $19.95 per month for the pleasure. Somehow it's being billed as a rival to Spotify, which as you know is much cheaper than that. Perhaps it's mainly in the fact that Taylor Swift's back catalogue is available; as you'll remember, she removed it all from Spotify at the end of last year.