The vibrato of professional gospel singers

Purpose to investigate the characteristics of professional singers vibrato according to the style of gospel music, and check if the verbal command to perform the vibrato interferes with their characteristics. Methods we analyzed the characteristics of vibrato spectrography of 20 professional gospel’s singers, 06 men and 14 women, (mean age: 30 years), based on two gospel style – Pentecostal and adoration. Two situations were structured: with and without verbal commands to do the vibrato. All participants responded to the item of vocal signs and symptoms of CPV-P protocol and were submitted to videolaringoscopy. Result in comparing the spectrographic analysis of the pentecostal style with the adoration style it was observed that in the pentecostal style 95% of participants had regular vibrato, with greater amplitude variation, higher energy spectrum with better definition and presence of harmonics; in the adoration style 100% had irregular vibrato, with a smaller amplitude variation, lower energy spectrum and 50% had presence of harmonics with lower resolution and 50% had not harmonics. In the comparison of spectrographic analysis of the pentecostal style with and without verbal commands it was observed that 75% of the participants had regular vibrato, greater amplitude variation (65%) more energy in the spectrum (55%), with greater definition and presence in harmonics(70%). There was no statistical significance between vocal training and speech therapy. Conclusion The vibrato of singers trained change with the gospel style singing. The verbal command to do the vibrato increases the definition of regularity, amplitude, power spectrum and harmonic.