I can take care of the vocal scores, which can be delivered in pdf, Finale, midi or xml format.
All my life, I've been picking up melodies by ear to play them on various instruments.
And I have been doing complete audio transcriptions very regularly for approximately 4 years, including from complex audio, with close to 100% accuracy.
Edit : Depending on the audio, and on what your requirements are, I may be able to make a karaoke track for an additional 50 NZD, but I need to check the file to be sure.
(I can provide examples of my previous works)