After announcing they'd create a supergroup a while back, Lupe Fiasco, Kanye West and Pharrell Williams -- who will go by the name of CRS (Child Rebel Soldiers) -- are hoping to find time to craft an entire album.

They've already leaked a track via an online mixtape titled "Us Placers," which samples Thom Yorke's "The Eraser," but according to what Lupe told Billboard recently, that's the only track they've recorded thus far.

"Now [our labels are] working it out," the rapper told Billboard.com. "Whoever is going to pay is going to pay a whole hell of a lot. Everybody is excited, [but] 'Us Placers' is the only record we have."

Wikipedia reports that another CRS track is to be featured on Kanye West's forthcoming third album, Graduation, and is expected on Fiasco's sophomore release, The Cool, but that is the only other track known of to date.

In related news, Lupe revealed to Billboard that The Cool has been pushed back from its October 30th release date to November 20.

He says that he is working with producers from his 1st & 15th camp, including Pro and Soundtrack. And previously, the rapper said that he would avoid big name producers, but Fiasco had avoided big-name producers because "It's too expensive," but "now we're doing CRS, [so] I can get all the music for free."

Despite the praise he received from the media for his debut, Food & Liquor, the Lupe says he's is getting wore down, will never do any more mixtapes and that he may not have very many studio albums left in him.

"I'm just wearing down," the rapper told Billboard. "I'm never doing mixtapes again, not even Internet ones. My whole energy for making hip-hop music is slowing down.

"I'll do what I have to do to promote my next album, but I'm not enthused about doing seven albums. I'll do my three, and then I am going to keep moving to the next phase of life and maybe grow trees," he continued.