I am planning to go mountain climbing on Mount Ontake next week.

His guitar performance is characterized by tremolo.

She beautifully sang the trill.

As a way of repaying the kindness of me helping him, he helped me repair my house.

In Sanskrit phonology, bilabial sounds play an important role.

In Sanskrit phonology, the importance of pharyngeal sounds is emphasized.

In Sanskrit phonology, the concept of triphthong is important.

Sound waves travel through matter.

Please turn down the volume.

He can perfectly distinguish intervals.