Hello Mike and welcome to the Cow Audio Forum.
Acoustic guitar? If so, just tell him not to overplay (play too loud) because you’re grabbing the whole thing with one mic. (I’m a singer-songwriter and do it when I need to. You might hedge your bet by using a Countryman E6 ear-worn mic. Because it’s close to the mouth, it’ll hear less guitar.
I doubt you’ll ever to get him to sync on another track later and I have no idea how you’d mute the strings invisibly.be best.
The only other way would be to have him try to sync to a full recorded version of him singing and playing that is recorded and mixed properly. It’ll probably look a little fake to the practiced eye, but the sound will be better.
Regards,
Ty Ford
Audio Forum Leader
Cow Audio Forum Leader
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