( Essence ) An Overture to Christed Vesica Aquarius .

Noun 1. overture

overture - orchestral music played at the beginning of an opera or oratorio
music - an artistic form of auditory communication incorporating instrumental or vocal tones in a structured and continuous manner
2. overture - something that serves as a preceding event or introduces what follows; "training is a necessary preliminary to employment"; "drinks were the overture to dinner"
prelude, preliminary
inception, origination, origin - an event that is a beginning; a first part or stage of subsequent events
3. overture - a tentative suggestion designed to elicit the reactions of others; "she rejected his advances"
feeler, advance, approach
proffer, proposition, suggestion - a proposal offered for acceptance or rejection; "it was a suggestion we couldn't refuse" ( The Free Dictionary )

. . .