What chords does 倫永亮 & 梅艷芳 play in 心仍是冷?

What tempo should you practice 心仍是冷 by 倫永亮 & 梅艷芳?

Which chords are part of the key in which 倫永亮 & 梅艷芳 plays 心仍是冷?

In which year was 心仍是冷 first released?