system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do people with british accents seem to lose their accents when they sing?
gpt
It's not unique to British people, it happens with basically all accents. An accent is mostly someone putting different stresses on syllables and using a different pacing/rhythm than we're used to. When singing, these (and many other factors that determine accent) are dictated by the song, and deviating can mess up how the lyrics pair with the melody.

That means they switch to a more neutral way of speaking, which just happens to be really similar to what we consider to be the standard "American" accent.