Anthony Gilbert 's On Beholding A Rainbow for Violin and Orchestra. Score. I : Passacaglia nascondita II : Cantilena - Slow and still III : Variazioni in moto perpetuo - flowing, legato, a little rubato On Beholding A Rainbow was commissioned by the BBC for Lydia Mordkovich and the BBC Philharmonic and written between 1992 and 1997, with some small revisions early in 1998. The work’s title refers to an important Jewish affirmation of trust, and is a private message to its dedicatee, the co...