A lot of restaurants and bars do karaoke. Try to make this one a little more unique to stand out. Put on a karaoke competition for an hour or two once a week with the winner getting their meal paid for. Your customers will love it and the quality of singing will be a little better when a free meal is on the line.
Don’t just let the professionals run the show, consider having an open mic night. Anyone in your local area that’s looking to get practice and more exposure would jump at the opportunity to play at your restaurant. Whether it’s music, comedy or poetry, your customers will enjoy the authenticity of the local talent.