Professionally speaking, lyrics should never be covered up. Just like when the flute has a solo there has to be a volume adjustment so that the flute can be heard. A band that outblasts the singer is not doing its job.
That being said vocals have also been used as an instrument...just ask Pat Matheny. In other words, the voice is chanting strictly non words such as aaahh, ooohhh. Even then the voice should be heard although not necessarily understood.
That being said vocals have also been used as an instrument...just ask Pat Matheny. In other words, the voice is chanting strictly non words such as aaahh, ooohhh. Even then the voice should be heard although not necessarily understood.