I'm writing the UC essays, and I currently have 5 drafts (each for a different topic). However, 2 of them are both about piano, albeit different aspects (1 is for prompt 2, the other for prompt 3). I've been told that I should avoid talking about the same topic in 2 different essays, but this would force me to talk about lucid dreaming (prompt 8). It seems like a risky topic, and I think my grades and test scores are good enough that the risk seems unnecessary.
So basically my question is: would it be riskier to write about piano in 2 of the 4 prompts, or write about lucid dreaming and make each essay about a different topic?
Note: My other essays are for prompts 4 (internship) and 5 (OCD and social issues).