What are the best practices for piano mic placement to achieve optimal sound quality and balance in a recording or live performance?

The best practices for piano mic placement involve using a combination of close and ambient mics to capture the full range of sound. Place close mics near the hammers for clarity and detail, and ambient mics further away to capture the room's natural acoustics. Experiment with different placements to find the right balance between the piano's direct sound and the room's ambiance.