[1] Borca studied music at the University of Wisconsin with John Barrows and Arthur Weisberg, graduating in 1971.
In 1976, Borca performed in a production of Adrienne Kennedy's A Rat's Mass directed by Cecil Taylor at La MaMa Experimental Theatre Club in the East Village of Manhattan.
Musicians Rashid Bakr, Andy Bey, David S. Ware, Raphe Malik, and Lyons also performed in the production.
Taylor's production combined the original script with a chorus of orchestrated voices used as instruments.
She has performed in the United States and internationally, with musicians such as William Parker, Bill Dixon, Butch Morris, Marco Eneidi, Joel Futterman, Sonny Simmons, Alan Silva, and Jackson Krall.