Bethany Seymour was born in York and graduated with first-class honours from University of Leeds where she read music. Her studies at Leeds included an Erasmus-exchange programme studying at the Musikhochschule in Köln with Barbara Schlick. Since then she has sung with Hermann Max and the Rheinische Kantorei in festivals in Knechtsteden, Leipzig and Erfurt. In England she sings with Yorkshire Bach Choir and Yorkshire Baroque Soloists with whom she has performed at Leipzig Bach Festival, Köthen Bach Festival, Merseburg Orgeltage, Aarhus, Düsseldorf, Ryedale, York Early Music Festivals and Bach Christmas Oratorio in Leipzig. She has also recorded Bach St John Passion with Yorkshire Baroque Soloists.

Recent performances have included Handel Solomon, Mozart Requiem, Bach motets (in Spain, with Rheinische Kantorei), Bach Mass in B minor (Amsterdam Concertgebouw also with Rheinische Kantorei) and Purcell King Arthur (York Early Music Festival with Yorkshire Baroque Soloists).