Surprisingly, it is

She manages to regain a measure of self composure whilst deepthroating you; the fact that there is still someone who can take your cock without too much trouble despite your enhancements is incredible to you.

You begin to feel the familiar tightening sensation in your balls that preludes orgasm, so you grab her head and twist a handful of hair in your fist. Jackknifing her head back and forth with wild abandon, you give your cock full attention as you use her throat as a sex toy.

Suddenly and without any warning you begin to cum; the first shot hits her deep in the throat and she pulls back in surprise.

Overwhelmed with pleasure, you allow her to slide off your cock, a handful of hair clutching her face to your crotch. The second and third cumshots splash across her face and into one eye. Still trying to understand what's going on, the poor Asian attempts to lift her hands as she jerks free of your grip and tries to protect her face.

The cello now forgotten, it lies exposed to your torrent of cum. And as you finish spraying all over her, the goopy streams of semen drip and pool on her piece of prized craftmanship. A look of pure horror begins to spread across her face. She lowers her hands, whispering in distress.

“How -how could you? My instrument, my beautiful-” and with that you jam a semi hard cum covered cock in her mouth and grab her now messed up hair. Wiggling her head around to clean off your cock, your cum continues to run and pool into the crevices of her cello while she looks up at you in horror. She looks so cute with wide teary eyes and bulging cheeks.

You then pull out and use her hair to wipe off your cock as she coughs, tears of shame trickling down her face to a sudden deafening burst of applause and laughter.

You hop off the bench and as pick up her case before walking away. Not a bad haul - after your duet, it's now full of money. You hear one of the few still watching comment on your performance.

“Wow he's so committed to the chauvinism act! He even took her money it like he earned it!"

Laughing, you continue walking. After all, you did do all the work.