Former Sydney Symphony Orchestra musician Benjamin Lawrence Jacks, 47, appeared at Downing Centre District Court on Friday on one charge of sexual intercourse without consent.
The then principal French horn player went out for dinner with the woman, who cannot be named for legal reasons, in December 2020.
The woman alleges she woke to Jacks digitally penetrating her. He has pleaded not guilty to the charge.
Crown prosecutor Rossi Kotsis showed the jury text messages in which Jacks, who has performed as guest principal with the London Symphony Orchestra and the Chicago Symphony Orchestra, apologised for the incident.
"I can't believe I woke up with your hands inside me??? Not very cool friend!! I had just spewed my guts up in your garden and was so drunk I could barely tell you my own name," the woman wrote.
Jacks replied: "My god, I'm really sorry, f***, I hope you forgive me. Not cool at all, totally correct, apart from that, it was a great night."
Woman: "Dude that was a shocker! You don't do that to a drunk friend who's crashing."
Jacks: "No I'm really sorry, I was totally hammered and not thinking straight. I feel really bad. Really terrible."
Woman: "You should feel really bad!!"
Jacks: "Anything I can do to keep this between us and to move on I would be very grateful. I feel Really sick, like Terrible, also the guilt and regret is crushing me [sic]."
Two days after the first text exchange, the woman messaged Jacks: "To be clear, what happened on Thursday morning was sexual assault".
Jacks responded: "It was a night of excess which had me acting so far out of my character that I am in a state of complete shock as to where we are. I too thought we were having dinner as friends."
The hearing continues.
