How is the typical vocalization of the Blue-gray Tanager often described?

Answer

A simple, rapid series of high-pitched chirps or trills, sometimes sounding buzzy

The typical song is described not as melodic, but as a simple, rapid series of high-pitched chirps or trills that can often sound somewhat buzzy or wheezing.

How is the typical vocalization of the Blue-gray Tanager often described?
birdcharacteristictanager