Harmonium is the second album by American pop singer-pianist Vanessa Carlton, released by A&M Records in the US on November 9, 2004. Carlton co-wrote some of the album with Stephan Jenkins, her then-boyfriend and the lead singer of Third Eye Blind, who produced the album. Harmonium debuted outside the top 20 on the US. Billboard 200, and sales fell considerably short of those of Carlton's debut album, Be Not Nobody (2002). Its only single in the US, "White Houses", was not a top 40 hit; two other singles, "Private Radio" and "Who's to Say", were released only in Asia. The commercial failure of the album, which Carlton attributed to poor promotion, led to her departure from A&M Records in mid-2005. She toured through the US during 2004 and '05.