In an exchange in a programme note for this vivid, startling new production of Blood Wedding, Young Vic artistic director Kwame Kwei-Armah and guest director Yaël Farber recall their first discussion of a possible collaboration at the theatre, they exchanged lists of plays they wanted to do. This Lorca classic, written in 1932 and first performed in 1933, was at the top of both of their lists. In an act of directorial generosity, Kwei-Armah yields the wish to do it to Farber; and she has repaid...