Next week Mase will release the new album from Harlem World, "The Movement," marking the debut of the first group to be signed to the rapper's All Out Records label.

Although Mase is no longer an official member of the group, his bloodline is still represented by twin sister Baby Stase -- the only female rapper in Harlem World.

Mase does make several guest appearances on "The Movement," and also served as executive producer, which put Stase in the tough position of having her brother call all the shots for the group she's in.

With [Mase] being my sibling," Stase told the MTV Radio Network, "sometimes it can be a little difficult. But it's fun overall because I know he's on my back and he's being hard on me because he wants to see me prosper. With us all, he wants to see us do just as well as he did when he first entered the music business.

The Movement" also features cameos from Nas, Kelly Price, Drag' On and the Harlem Boys Choir.

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