prelude
noun
a preliminary to an action, event, condition, or work of broader scope and higher importance.
Used to describe an ongoing action or state that is currently taking place in the immediate present.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
I am sure she will give us something lovely; see, she is preluding with her airs and graces.
From Greek Women by Mitchell Carroll