Piece of Mind is the fourth studio album by English heavy metal band Iron Maiden. It was released on 16 May 1983 in the United Kingdom by EMI Records and in the United States by Capitol Records. It was the first album to feature drummer Nicko McBrain, who had recently left the band Trust and has been Iron Maiden's drummer ever since. Piece of Mind was a mostly critical and commercial success, reaching number three on the UK Albums Chart and achieving platinum certification in the UK and North America.