One might be forgiven, upon first listening to the NAXOS recording of Avner Dorman’s concertos performed by Andrew Cyr’s Metropolis Ensemble, for not feeling immediately convinced that these are, in fact, concertos in any traditional sense. There are no buoyant Mozartian introductions here, no grand orchestral pauses to launch soloists into rapturously virtuosic cadenzas before a triumphant final cadence. Those squeamish about contemporary orchestral music might initially recoil from what is strange and new in Dorman’s work: unsettling harmonies, unusual pairings of instruments, extended instrumental techniques. Ultimately, though, there is plenty here that is familiar. Dorman, a 35-year-old Israeli composer and protégé of John Corigliano and Zubin Mehta, has an eclectic approach — borrowing elements from jazz, pop, and Middle Eastern musical idioms — that makes his music surprisingly accessible.