My dad turned 90 this weekend, and we were all set to drive up north to celebrate his birthday.He’s a hard one to buy a present for. My dad does not need more things. He likes using the things he has until they are completely worn out. He already has a line of slippers on his top shelf, queued up for when the pair he’s wearing is threadbare.He wore his last pair of hiking boots until his socks showed through.Besides, he said “No presents!” in a very persistent way.So my sister and I decided to give him music.Barbershop music was ...