Kanye West has released another Paul McCartney collab "All Day," the follow-up to their Rihanna assist "FourFiveSeconds." Macca adds whistling on the new cut.

"All Day" will feature on Ye's upcoming album, So Help Me God, which he said in February is about "80 percent done," will get a surprise release.

"It's fun to work hard. We're being inventive," West recently told British radio DJ Zane Lowe.

"The College Dropout came out of a fight to rap. This new album is coming out of a fight to design."

"It's gonna be bars, songs, cookout music that just feels good . . . This album is embracing the music, joy.

Being of service to the people. I just hope people like it and enjoy it," he added.