He is doing special exercises to strengthen the incisivus labii superioris muscle.

The treble clef is often used in musical scores.

He is good at reading the treble clef.

Kaonri is my best friend.

His music skillfully uses dissonance.

Haplology is a part of linguistics, referring to the phenomenon where a part is omitted when the same syllable repeats.

This language is characterized by implosives.

Pronouncing the palatal sounds in Japanese is difficult.

This word is affected by the sound shift.

He is an expert in orthoepy, teaching pronunciation.