H2O is the eleventh studio album by American pop music duo Daryl Hall & John Oates. The album was 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 was certified double Platinum by the 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 featured three top 10 US singles, one being “Maneater”, which was the biggest hit of their career, spending four weeks at #1 on the Billboard Hot 100 chart. It is the first appearance for longtime bassist/musical director Tom “T-Bone” Wolk.