3 Flutes (incl. Picc.), 3 Oboes (incl. Cor Anglais), 3 Clarinets (incl. Eb & Bass), 3 Bassoons. Brass: 4 Horns (the trumpet is the sole soloist).
in 1968, the work was famously described by Weinberg’s friend and mentor, Dmitri Shostakovich, as a "symphony for trumpet and orchestra". Score and PDF Resources weinberg trumpet concerto pdf