WASHINGTON — President Trump’s longtime lawyer, Michael D. Cohen, secretly recorded a conversation with Mr. Trump two months before the presidential election in which they discussed payments to a former Playboy model* who said she had an affair with Mr. Trump, according to lawyers and others familiar with the recording.
The F.B.I. seized the recording this year during a raid on Mr. Cohen’s office.
...
[Giuliani]:"Mr. Trump had directed Mr. Cohen that if he were to make a payment related to the woman, write a check, rather than sending cash, so it could be properly documented.
https://www.nytimes.com/2018/07/20/us/politics/michael-cohen-trump-tape.html
*This is about McDougal, not Stormy Daniels. I bet it's not the only secret recording Cohen made during his illustrious career as a lawyer. He definitely knows that his clients prefer to lie and deny everything until the very end. No collusion!