The world premiere of a violin concerto was given on Sunday at Carnegie Hall with Joshua Bell as soloist and Roberto Abbado leading the Orchestra of St. Luke’s. Ordinarily, this might not be an event worthy of national attention, but in this case, the composer was 15-year-old Jay Greenberg, whose 5th symphony was recorded last year by the London Symphony, and who has been compared to Mozart and Mendelssohn. “Greenberg skilfully leads the listener through a gamut of emotions with touches of 21st-century tonality, excitement and lyricism. It’s a compelling addition to the genre.”