NEW YORK (AP) — The prosecution’s star witness has yet to take the stand in Donald Trump’s hush money trial. But jurors are already hearing Michael Cohen’s words as prosecutors work to directly tie Trump to payments to silence women with damaging claims about him before the 2016 election.

The second week of testimony in the case will wrap up Friday after jurors heard a potentially crucial piece of evidence: a recording of Trump and Cohen, then his attorney, discussing a plan to pay off an ex-Playboy model who claimed to have an affair with Trump. The former president denies the affair.

Prosecutors have spent the week using detailed testimony about meetings, email exchanges, business transactions and bank accounts to build on the foundation of their case accusing the presumptive Republican presidential nominee of a scheme to illegally influence the 2016 election. They are setting the stage for pivotal testimony from Cohen, who paid porn actor Stormy Daniels $130,000 for her silence before he went to prison for the hush money scheme.