H2O is the eleventh studio album by American pop rock duo Daryl Hall & John Oates, released on October 4, 1982, by RCA Records. It peaked at number three on the Billboard 200, making it the duo's highest-charting album, and has been certified double platinum by the Recording Industry Association of America (RIAA) with sales of over two million copies. The album title is a play on the chemical formula for water, where "H" is for Hall and "O" is for Oates. It features three US top-10 singles, including "Maneater", the most successful single of their career, spending four weeks at number one on the Billboard Hot 100. The album marks the first appearance for longtime bassist and musical director Tom "T-Bone" Wolk. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.