Female Vocalist Wanted, Urgently

I urgently require a female vocalist to join a working, pro, pop/rock duo. I am based in Sudbury Suffolk, which is not far from Colchester.
I have work booked and more enquiries are coming in, but I need to find the right girl. My duo partner of the past five years is expecting a baby very soon and is reluctantly giving up.
Styles are from 1940s to current chart. my partner has been doing things by Adele, Lady Gaga, Kings of Leon, Queen etc. plus 60s, 70s disco.
May need somebody for the 8th October and other imminent dates, so a fairly free diary, is very important.