From the passage provided, extract the alternative name of Lætitia Sadier.

Context: Lætitia Sadier is a French musician, best known as a founding member of the London-based avant-pop band Stereolab. 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 Lætitia Sadier Source Ensemble. She has frequently performed guest vocals and collaborations with other artists.

Answer: Lætitia Sadier also goes by Seaya Sadier.