20ms is actually equivalent to playing/singing with someone around 20 feet away from you, on a stage. (Sound travels around 1.13 feet per millisecond.)
Many of us in classical music are doing this all the time. So it's definitely doable. Especially if you have a conductor! Indeed, that's one of the reasons conductors are useful.
Many of us in classical music are doing this all the time. So it's definitely doable. Especially if you have a conductor! Indeed, that's one of the reasons conductors are useful.