First of all, if you close your eyes at a performance, they might as well put on a CD

The audience, unless they have absolutely NO concern whether an act is karaoke, lip synching, or a DJ prancing around (sadly, that's a large percentage these days ) wants to feel that whoever they are looking at is actually playing and singing. Allow the machines to play almost everything, and you are allowing them to assume you aren't playing anything at all...

Force yourself to play as much as you can, and that is a degree of effort that will be easily SEEN, rather than just heard. If the audience just wants to HEAR something like the record, they can hire a DJ... Oh, that's right. We're supposed to do THAT now as well, aren't we?