My name is Tanaka.

That is my personal issue.

We are going on a trip together.

I lost my precious belongings.

I learned how to calculate the harmonic mean in math class.

The harmonic series continues indefinitely, but its sum is not finite.

Vowel harmony plays an important role in the phonology of certain languages.

He is an expert in harmonic analysis.

There was discord between them.

That painting is incongruous with the room's decoration.