In "Kvetch: One Bitch of a Life, " American journalist Greta Beigel looks back sometimes in horror, often with humor at dysfunctional Jewish family life lived under the umbrella of apartheid in South Africa, circa the 1960s. Her memoir affords an unusual look at Orthodoxy's responses to events of that shameful era, while delving into another rarefied world: The lives of musical prodigies. Migrating to California, "Kvetch" then goes behind the scenes governing music journalism at a major metropolitan daily,