His job is a daily monotony routine.

His way of speaking is monotone, and it's boring to listen to.

His job is monotonous, repeating the same thing every day.

His new song is in a minor key, and it's very moving.

The Tancho, a symbolic bird of Japan, captivates people with its beautiful appearance.

I often enjoy bird watching in the park on weekends.

His new song is composed in A minor.

Lithium batteries last a long time.

Lutetium is one of the rare earth elements.

I cooked today's dinner using fresh fruits of the sea.