@tom_g nope try again please.
In actual fact to quote a professor of linguistics and speech
“We seem to lose our accents when singing because singing tends to distill the vowel sounds in speech, in particular, stretching out those parts of the vowels that we have in common.”
We learn vowel sounds, particularly in singing, in a way that allows us to project them to a loud audience. That means that the front of the mouth needs to be more open than it is in speech so it’s a bit like a megaphone. The vowels take on a different sound in terms of their timbre which is really what accent is. Therefore the vowels are being placed in a position for singing which is not the same as speech.
Oh and another example.
“I saw an operatic soprano a while back who, when she spoke, had a dripping Southern twang. But when she sang, there was no trace of an accent. A lack of accent is very much a sign of a well trained artist.”
What you can take from this is that accents can indeed be removed with the correct training and from this you can speak with a neutral voice with no local or regional tone to it and for this you can look at various English language courses.
To quote again.
“A neutral accent is one that is grammatically correct, but has no regional characteristics.” so if we take the description of an accent posted above which described an accent as “A distinctive mode of pronunciation of a language, esp. one associated with a particular nation, locality, or social class.” then by removing the way that words are pronounced so they have no sign of a particular nation, locality, or social class it is fair to say that you have no accent.
There are various videos online from companies that teach people how to speak English where they focus on a neutral voice to remove these regional or even national characteristics to leave you with an English speaking voice that is clear, contains perfect pronounciation and indeed has no discernible accent.