Grammy-nominated rapper [artist id="2545682"]Drake[/artist] has not only become a well-known star without releasing an actual album, he's also already worked with music vets [artist id="854"]Mary J. Blige[/artist], [artist id="1230523"]Kanye West[/artist], [artist id="510062"]Lil Wayne[/artist] and [artist id="502642"]Eminem[/artist].

But one collaborator still eludes him. [article id="1619815"]Drake named British singer Sade[/article] as one of the artists he hoped to work with on his forthcoming debut, Thank Me Later.

"[artist id="1287"]Sade[/artist] not only embodies a lot of class, her brand is so strong and she's such an amazing woman, but the melody she chooses to use and her voice has that dark, sexy feel that a lot of So Far Gone has," Drake told MTV News last month. " 'Lust for Life,' the 'Houstatlantavegas,' 'The Calm' -- those all remind me of 'Sade moments.' I'll call them 'Sade moments,' where you hear it, it hits you, and you feel something. When Sade's 'King of Sorrow' comes on, you feel it, consistently. So I just want to try to experiment and see if there's a way to bring her into the hip-hop world. I'm kinda scared. I don't want it to be that moment that everybody's like, 'Whoa, that shouldn't have happened.' So it's really got to be calculated for the right moment. ... Hopefully there will be a great Drake and Sade record for people to listen to, and hopefully it'll be one of the best decisions I've ever made."

Sade, however, who recently released her 10th album, [article id="1631390"]Soldier of Love,[/article] after a decade-long haitus, isn't planning to take Drake up on his offer anytime soon.

"I don't think they have contacted me," Sade, 51, told Canada's National Post. "I've never collaborated because I've always avoided working outside my safety zone -- I can be exactly who I am and can fail or succeed within the moment. I feel safe working like I do. I wouldn't want to work in a situation where I am expected to deliver, because I think I wouldn't deliver."

Drake's Thank Me Later is now tentatively slated for a March release with appearances in the works from Andre 3000, Eminem and Jay-Z, among others. The Young Money MC will also headline 25 cities on his [article id="1631528"]Away From Home Tour[/article], beginning April 6, where he will be implementing an eco-friendly policy throughout the run. The tour will stop at 15 college campuses along the way, including Penn State, Michigan State and University of Central Florida.