Cadogan Hall, LondonThe contemporary works were unengaging, but the Romanian Orchestra’s Tchaikovsky enthralled, and Vengerov’s bravura reading of Prokofiev’s First Violin Concerto closed the concert in spectacular styleBilled as a Maxim Vengerov gala, this programme of popular classics was also a showcase for the Romanian National Philharmonic Orchestra, the somewhat grandiose touring name for the Bra?ov Philharmonic. A fine, disciplined ensemble, they hail from Romania’s seventh most populous city, located slap bang in the middle of Transylvania. Under Armenian conductor Sergey...