Sydney Alexis Krauss (born September 27, 1985) is an American singer, songwriter, former schoolteacher, activist and frontwoman of the noise pop duo Sleigh Bells. She is co-founder of Beauty Lies Truth, a website dedicated to educating consumers about the ingredients in personal care products.Krauss studied International Studies at Marymount Manhattan College, and then received New York State certificates for elementary and bilingual education at Pace University. After completing Teach For America and meeting her bandmate Derek E. Miller, she began her career as a full-time musician.