"Duke" was positively received by music critics, who praised the album for bridging the band's progressive rock-oriented past, via experimental pieces such as the closing ten-minute "Duke's Travels"/"Duke's End" suite, with their more pop rock-oriented, commercially accessible direction, as displayed on the hit singles "Turn It On Again", "Duchess", and "Misunderstanding". It reached No. 11 in the US, and it was the first album by the group to reach No. 1 on the UK charts. It has since been certified Platinum in both the UK and US.