Windows MIDI Step Sequencer with Pitch Detection

I'm looking for a skilled developer to build a Windows program that includes a MIDI step sequencer and pitch detection functionality using Python, specifically with the Aubio library.

Key Requirements:
- MIDI Step Sequencer
- Simple note input and playback
- User-friendly graphical user interface (GUI)

- Pitch Detection
- Real-time pitch detection using Aubio

Ideal Skills and Experience:
- Proficiency in Python
- Experience with MIDI programming
- Familiarity with Aubio and pitch detection techniques
- Strong GUI development skills for Windows applications

Please provide examples of similar work done.