Give me your best ideas for a pre wedding sangeet/music night

I'm getting married next year. My family would like to do a music night with a live singer, and invite close friends and family (~80 guests). We arent doing any choreographed dances, nor will have a dance floor; looking to have an intimate, relaxing event. other than the singer, who will show up for an hour, what ideas do y'all have to keep guests entertained? i can set up a photo booth but thats cliche and want to avoid the whole social media uploading. this will be a post dinner event with light bites and drinks. we will have floral decorations, lights etc. What else can we do. The bride and her immediate family and friends will be present too.