Build prototype of Apple Watch app called MyRadio

Build a prototype app for Apple Watch using WatchKit. The app is called MyRadio. It has a library of 30 songs that have been tagged by genre (classical, R&B, hip hop) and tempo (slow, medium, fast). User chooses genre and tempo from two scrolling list pickers, then clicks "submit". App will then play one song from the library that has been tagged with the selected genre and tempo; if multiple songs in the library match the selected genre and tempo, app can make a random choice for the song to be played.

I only need the prototype code , well-documented. I will develop and finish the code myself.