Q: Passage: The song "Year of the Cat" began as "Foot of the Stage", a song written by Stewart in 1966 after seeing a performance by comedian Tony Hancock whose patter about "being a complete loser" who might as well "end it all right here" drew laughs from the audience: Stewart's intuitive response that Hancock was in genuine despair led to the writing of "Foot of the Stage". It was the melody for this never-recorded song which Stewart set the lyrics of "Year of the Cat" to in 1975: pianist Peter Wood was given a co-writing credit on the song in recognition of his piano riff on the recorded track.

Question: Based on this passage, who played piano on year of the cat?
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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This is the relevant information: It was the melody for this never-recorded song which Stewart set the lyrics of "Year of the Cat" to in 1975: pianist Peter Wood was given a co-writing credit on the song in recognition of his piano riff on the recorded track. So the answer is pianist Peter Wood.