Opening the season with a non very known opera by a non very popular here Romanian composer was a risky venture. Probably the most audacious from the London big five (LSO added the Enigma to its only English opening to make it more pleasant to classic audiences). And it went well. Very well. The concert at the Royal Festival Hall was a reprise of the one they did at Enescu Festival in Bucharest earlier this month, just with more rehearsals.