articulation, attack, bel canto, bravura, choral singing, coloratura, croon, crooning, delivery, diction, enunciation, folk singing, hum, humming, intonation, lyricism, mouth, mouthing, operatic singing, phonation, pronunciation, scat, scat singing, singing, sol-fa, sol-fa exercise, solfeggio, solmization, song, sounding, speaking, speech, tonic sol-fa, utterance, verbalization, vocal music, voice, voicing, warbling, yodel, yodeling