"Mr. Big Stuff" Copy Version by (Mercy & The Merkettes) Original by Jean Knight.

"Mr. Big Stuff" is a song by American singer Jean Knight. The song was released in 1971 on the Stax label as a single from Knight's debut album of the same title, and became a big hit in the US, reaching No. 2 on Billboard Hot 100. The song was certified double platinum and was the No. 1 Soul Single of the year.