Frou Frou is a British Trip Hop* duo comprised of Imogen Heap and Guy Sigsworth. (Definitely NOT Hip Hop.) They only produced one album in 2002, titled Details. This is “Let Go” from that album.
* I’m not really sure why the “trip hop” moniker got assigned the way it did; I don’t think the genre has much in common with Hip Hop. But hey, I don’t make the rules.