Lætitia Sadier (born 6 May 1968, sometimes known as Seaya Sadier, or "The Shah") is a French musician best-known as the singer of the post-rock band Stereolab. Sadier was working as a nanny when she met McCarthy leader Tim Gane at a gig in Paris during the late 1980s. Sadier was disillusioned with the rock scene in France, and soon moved to London to be with Gane and to pursue her career. She had contributed vocals to McCarthy's third and final album.

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