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.
It does not have a specific rhyme scheme.It has a free form.It does not have a set meter.
i circled it
If you look it up in the dictionary it’s Visible