The Weeknd is the alias of Canadian R&B singer Abel Tesfaye. His first album/mixtape, "House Of Balloons" on March 21st 2011, with two more, "Thursday" and "Echoes Of Silence", due later on in the year.
I'm absolutely loving "House Of Balloons" at the moment. He's got a great voice, great lyrics and the production is absolutely top notch. If you're into Frank Ocean, you'll definitely like this.