Fay Claassen was born in 1969 in Nijmegen The Netherlands. Before she devoted herself to singing, she followed courses at the academy of ballet. Subsequently she studied at the academy of acting after which she finally opted for singing. She completed her study at The Royal Conservatory in The Hague in Holland with remarkable distinctions for jazz-timing and vocal improvisation.
Fay Claassen graduated in 1997 from the Royal Consevatory of The Hague with two special endorsements for Jazz timing and Jazz improvisation. Some of her teachers were: Rita Reys, Deborah Brown, Frans Elsen, Racheal Gould, James McGray, Marjory Barnes and Judy Niemack.