Paul McCartney Soundalike Needed

I'm looking for a talented musician who can very accurately mimic the voice and replicate the sound of Paul McCartney singing, from The Beatles era, ‘When I’m 64’, but substituting lyrics I’ve written for the original ones... (Budget: £20 - £250 GBP, Jobs: Audio Engineering, Audio Production, Audio Services, Music, Music Production, Music Transcription, Sound Design, Sound Engineering)