 Her early string quartet "Pannonia Boundless", evoking eastern European sonorities, has been recorded by the Kronos Quartet on their album "Kronos Caravan" (1999) and published by Boosey & Hawkes (2007).The Kronos Quartet, with clarinetist David Krakauer, premiered her 40-minute "Babylon, Our Own," commissioned for the 10th anniversary season of the Clarice Smith Performing Arts Center at the University of Maryland in College Park, Maryland, in September 2011.In her more developed orchestral work "Orbits" (2002), Vrebalov uses overlapping densities of sonorities and rhythmic proportions such as the Fibonacci series to portray her idiosyncratic post-modern conception of musica universalis.