Getty Images

Update (10/9): Okay, people. You're going to see Rick Ross and Prince perform on the same stage on the same night in a mere 11 days. Rozay, Meek MillNick Jonas and French Montana have joined the previously announced lineup of Beyoncé- and Jay Z–sized artists. (Including, yeah, Hov and B.) Scroll down for the full list of Tidal X: 10/20 Amplified by HTC performers, which now stands at a sturdy 26. Place your bets on who's next. (By the way, all the proceeds are for charity. Read on for more about that, too.) (Also: Apologies, but the event is now sold-out.)

Update (10/2): Jay Z's celebratory Tidal charity concert in Brooklyn already has a killer lineup (scroll down), and it just added Pusha TTravi$ Scott, Roc Nation signee/Made in America all-star Vic Mensa and producer/rapper Hit-Boy. October 20 can't come soon enough.

Original story (9/30): Yesterday Jay Z announced that Tidal, his popular-to-shit-on streaming service that's served up a wide swath of terrific exclusives and events, has reached 1 million users. (On the same day, Spotify announced that it's set to pass 100 million.) Hov also teased something:

Now we know the something is really something: Tidal is doing a charity concert at Brooklyn's Barclays Center on October 20, it'll be available for subscribers and non-subscribers to livestream, and the lineup is effing bananas. Check it out:

Tidal X: 10/20 Amplified by HTC lineup
Jay Z
Nicki Minaj
Lil Wayne
Damian Marley
Thomas Rhett
DJ Cipha Sounds
DJ Reflex
Travi$ Scott
Vic Mensa
Pusha T
Rick Ross
Meek Mill
French Montana
Nick Jonas

Tidal Rising acts
Alessia Cara
Benjamin Booker 
Justine Skye
Flatbush Zombies

A press release elaborates on the charity element: 

"All funds collected from ticket sales will be administered by New World Foundation on behalf of TIDAL. TIDAL specifically will match 100% of all net gross proceeds that will go to the TIDAL X FUND at New World Foundation during pre-sale period. 100% of ticket sales will benefit nonprofit organizations dedicated to advancing positive community relations and effecting systemic change for the development and sustainability of just societies, this inaugural event’s philanthropic focus. All expenses are being covered separately to ensure maximum funds being donated."

Tickets for Tidal X: 1020 Amplified by HTC go on sale for Tidal subscribers on Wednesday, September 30 at 12PM EST; tix will open to everyone on Friday, October 2 at 12PM EST.