One Voice Technique - OVT

One-Voice-Technique (OVT) is a functional vocal training method for non-classical singing that was developed by Annett Thoms in 2000.


The basis for this type of voice formation is the natural physiological laws of the speaking voice. The modification of the air flow by phonation and articulation is almost identical to the modification of the air flow for the sound of the speaking voice, on all tones.


As with speech level singing, the internal larynx muscles are trained and the pharynx muscles (mainly those with auxiliary or protective functions during swallowing) are conditioned for relaxation, just like they behave during natural speaking.


This enables singers to sing from the lowest to the highest tone without changing the sound quality. The typical “break” (change in quality between two consecutive tones) is therefore missing.


Therefore, and this is a decisive advantage of the One-Voice-Technique, the vocal part is not divided into several vocal registers or "voices", as is usually the case (e.g. chest voice, head voice, middle voice, mixed voice), but it is, from the deepest to highest tone, ONE voice.


Another advantage of OVT is the emotional implementation of lyrics. Since the singing tone is almost identical to the tone of the speaking voice, the singing voice gets its different colours (sounds and effects) naturally due to the different emotions of the singers during the interpretations. The different colours (sounds and effects) do not have to be learned or trained „additionally“ in OVT.



This vocal training method has been taught at JAM MUSIC LAB - University for Jazz and Popular Music Vienna and at AMP - International Academy for Music and Performing Arts Vienna since 2011 by Annett Thoms. The One Voice Technique is now also taught by former singing education students from Annett Thoms.