Based on the researched the writer found that happened a study on sound change pronunciation on Thrash metal song lyrics, such as:
The pr ocess of sound vocal folds with loss of movement, not collected by the immediate release of a voiceless consonant sound, so the sound turns into a voiceless voiced.
- “believe that…”
Phonetic transcript [bili:v] and that [ðæ]
Become [billi:v]+ [ðæ]-/bili:f ðæ/
Assimilation Process: the interdental sound (ð)affets the labiodental voiced sound(v) so that the noise (v) change into unvoiced labiodental sound (f).
The process of voicing of the vocal cords during articulates with the sound of the voice channels are on velum position and let the air flow and result in aspiration before the vocal cords vibrate, the sound of voices widened, so that the voiceless sound becomes voiced.
“heart froze…” Phonetic transcript: heart [har:t] and froze [frouz]
Assimilation Process: the labiodentals sound (f) affects the voiced sound alveolar plosive unvoiced (t)so that the noise (t) change into alveolar plosive voiced(d)
The process of the sound produced by briefly touching articulator articulation point with the process of changing the sound of a dental or alveolar change into sound (r), in English, the use of noise (t) and (d) and occurs between the vowels.
- ”were gathering…”
Phonetic change Gathering [gæθ∂riŋ]
Assimilation Process: the alveolar sound (t) affects the middle vocal sound (e) so that the noise (t) and (e) contact with the noise flap (r)
The process of changing the sound of two sounds close together, thus causing the two sounds to be not the same and produce a sound pressure that easily articulated and the process is very rare compared with assimilation.
Phonetic transcript [brɅθ∂r]
Become [brɅθ∂r]-/ brθ∂r/
Assimilation Process: the interdental sound (θ) affects the middle vocal sound (Ʌ)so that the noise(Ʌ)lost unvoiced.
The process of removing a segment of a particular phonetic context. This removal process appears in rapid speech spoken in various languages.
- “Metal hear...”
Phonetic transcript [met∂l]
Become [met∂l]-/ [m∂tl]
Assimilation process: the alveolar plosive unvoiced sound (t) affects the back vocal sound (e) so that the noise (e) lost unvoiced.
The process of entry of a segment or a non-syllabic syllabic into a series of segments.
Phonetic transcript [s∂mθiη]
Become [s∂mθiη]-/ s∂mpθiη/
Assimilation Process: Were added labial stop sound unvoiced (p)
Based on the researched the writer got six types of sound change pronounciation in the Thrash metal song lyrics, the writer suggested to another researcher to find another area in music to find another sound change. The writer hopes this research can give an advantage for the linguistic student to urge them to study more deeply about linguistic especially about phonology.