Christina Henriette "Jerney"[1] Kaagman (born 9 July 1947) is a Dutch singer-musician and music executive best known as the lead singer for the progressive rock group Earth and Fire, with whom she scored a slew of international hits between 1969 and 1990.

She recorded as a solo artist also, and after her career, as a singer worked for the music industry, as president of the Dutch musicians' union BV Pop; as a public relations manager for a radio station; and on television, as a judge on television talent show Idols.

After the band split in 1983, she made two solo albums and appeared in the first issue of Dutch Playboy (May 1983).

In the nineties, she was the public relations manager at the radio station Noordzee FM, and in 2000 she became director of Buma Culture Foundation.

[citation needed] Kaagman never married, but had a long time relationship with Bert Ruiter,[5] bass player for Focus and Earth and Fire.