Write in a {{tone}} tone. Create a structured Interview-Based data gathering plan for researching music production. Target audience: retirees starting businesses. Research goal: build partnerships. Industry context: clean-energy. The plan must include: data gathering objectives, interview-based methodology with instrument design, sampling strategy, data management, analysis preparation, reporting framework, and timeline with resources. Present as numbered steps with action title, instructions, expected outcome, and pitfalls. Maximum 1700 words.