Hopefully be happy & smile it just for an hour or so....it makes them feel good ,music? . Do invest in a CD PLAYER. FIND SOME CD/s that they like listening to. Do accept that they may disappear, Go to Goodwill, or Amazon, or whatever, Put their name on the CD cover if you are worried about it. Music inspires the soul.... They will hear it. Do talk with your loved ones, play music. Feed their souls and their taste buds... Go get them a shake, and add a little Ensure of nutritious value. Make your visit ENJOYABLE for you and loved one. Dance, even in a wheel chair, take their hands and hold them and tap your toes to the beat..... If they can stand a bit, hold them and dance a little.... Be close to the chair they may want to sit down after a few seconds.....Mom can't see well, but she feels me, and hears me....And she smiles...That's what counts the most... Make them Happy :) Even a radio tuned into a music station is great... Old radio broadcastings : The Shadow Knows...
I only know about this because my BIL loves his record collection, but there are lots of sites on line that give advice.