Respuesta :
The theme that is developed in the passage is "perfecting artistic talent."
What is a theme?
A theme refers to the subject of a piece of writing around which the whole text revolves. It is an underlying meaning in the writings.
The given passage about Johann Sebastian Bach points out his talents and achievements. His life, from a learner to a composer and music teacher is explained in the passage.
The passage outlays his journey in music and hence its theme can be best explained as "perfecting artistic talent."
Learn more about a theme here:
https://brainly.com/question/1673952