I’m kind of confused on what you are asking for, you want an essay how long and about a public service announcement?
Answer:
"effortless"
Explanation:
"less" is the suffix which negates "effort".
You're exerting strength and attempt when giving effort at a task and either don't have to (as in this case with playing the instrument) or don't when doing something effortlessly, thus the two have opposite connotations via the suffix.
You would ask the questions how would y when or where to find out the information that you may need
