iPhone audio beatbox app

I have an app that is 75% complete, but the programmer I've been working with is busy in school and progress has been slow. So I'd like to find someone to finish up the app, and add several missing features, touch up the user interface, and perhaps improve app performance. I have a list of features that need to be added. I need a coder with good UI and UX design skills who has experience in iOS. Core Audio experience is needed, as is experience with Audio Unit and audio programming in general. Also, a basic understanding of musical rhythms is advantageous, and excellent English skills are necessary for smooth communication. If you have a resume with audio apps at the iTunes store, that would be very helpful. I may have you coordinate with the original programmer if there are questions. I can tell you more about the project after I send you an NDA and you sign it. Thanks, Avi