Create a highly detailed 3D model of an upright piano with its lid open, revealing the inner strings and hammers. The piano should have a classic wooden finish, with visible grain texture on the polished wood surface. Include detailed keys, pedals, and intricate mechanisms inside. The model should evoke a vintage, well-used look, with subtle wear on the keys and frame. Ensure realistic lighting to highlight the depth and complexity of the open piano’s interior.

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