Sarah Theresa Hudson is an American pop singer-songwriter, and creator of the club-pop music project Ultraviolet Sound. 　　Sarah Hudson is currently signed to Prescription Songs/AAM as a songwriter. A song she co-wrote with Katy Perry, Dr. Luke, Max Martin and Cirkut entitled "Dark Horse"[2][3] became Perry's third single off her album, Prism. "Dark Horse" has been a commercial success, charting at number one on the US Billboard Hot 100. The song topped the charts for four weeks straight and has sold 7.9 million copies so far, making it one of the top-selling digital singles of all time. Sarah also co-wrote "Black Widow" by Iggy Azalea and Rita Ora which has recently been certified 2x platinum by the RIAA and peaked at number three on the US Billboard Hot 100 charts. Hudson has currently penned "Get On Your Knees" by Nicki Minaj featuring Ariana Grande, "Swish Swish" by Katy Perry & Nicki Minaj, "The Feeling" by Justin Bieber featuring Halsey, "Banshee" by Santigold, "San Francisco" by 5 Seconds of Summer and many more cuts on the hit records of today. On April 7, 2017, Hudson released a solo EP entitled, "Songs from the Sea".