warble
verb (used without object)
to sing or whistle with trills, quavers, or melodic embellishments.
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.
"Well then, Patrick replies to Ossian: Upon my word, son of Fingal, While I am warbling the psalms, The clamour of your old women's tales Disturbs my devotional exercises."
From The Antiquary — Volume 02 by Sir Walter Scott