They are the foundation, indispensable heart and essence of everything that appears on the stage; be it a play or a musical, whether in a school, community theatre, a church, or professional theatre in any town in America and also of course on Broadway (plus more than the 68 countries around the world that regularly produce and perform American theatre).
Free films, offered with a pre-screening glass of wine, include Carlos Saura's indispensable, heart-wrenching "Flamenco" on Feb. 21.
Peter Preston, the editor during most of this period, and Ian, his managing editor, were the indispensable pair at the heart of the enterprise.
Ronald Grainger, who has died aged 91, played a major role in transforming radiology from a limited discipline, based largely on radiography (X-rays), into a vast and indispensable speciality at the heart of all medical clinical management.
In last week's article on Japan's technology champions ("Invisible but indispensable") we located Westinghouse and the old heart of the American steel industry in Philadelphia rather than Pittsburgh.
In recognition of the fact that inclusivity is at the heart of the SDGs and indispensable to achieving them, such as ending preventable child deaths or ensuring all children learn, Save the Children launched in April the Every Last Child Campaign.
Star man Michael Bradley's consistent performances at the heart of midfield prove that he's indispensable even when dad Bob is no longer the coach.
He has been an indispensable ally of the White House in enacting the tax cuts at the heart of President Bush's agenda.
These lie at the heart of the current crisis, and Tett's account of their invention and dispersal makes "Fool's Gold" a gripping and indispensable book.
No matter how indispensable or compelling an argument or how thorough the reporting, war policy books such as Obama Wars do not venture much out of DC board rooms and into the heart of darkness..
