Three months after the stunning death of his mother, Donda West, producer/rapper Kanye West is planning a tribute performance at the Grammy Awards on Sunday.

The rap superstar has not been officially announced as a performer, but West -- who snagged eight Grammy nods, including Album of the Year for 'Graduation' -- was seen rehearsing 'Stronger' and 'Hey Mama' at the Staples Center on Thursday, according to PEOPLE.

Donda West died on November 10 in Los Angeles, after undergoing an abdominoplasty -- commonly known as a tummy tuck -- and breast reduction. She was 58.