Lætitia Sadier (born 6 May 1968, sometimes known as Seaya Sadier) is a French musician, best known for founding the London-based avant-pop band Stereolab with her former partner Tim Gane whom she'd met singing backing vocals for McCarthy. She is also a co-founder of [l1734]. In 1996, while Stereolab was still active, she formed the side project Monade. In 2009 - the same year Stereolab became inactive - she ended the Monade project and began to perform solo work under her own name; her current band is known as the Laetitia Sadier Source Ensemble. She has frequently performed guest vocals and collaborations with other artists. She is also a member of Little Tornados, singing and playing bass.