My grandmother's lullabies (is it still a lullaby if it's morning, though?) to her flowers were more than just idle sounds. Rather, they were an expression of her caring. Remembering her singing made me think about how music in general, and singing specifically, is an essential part of caregiving for humans, as well as houseplants.
Just as people who stutter are often encouraged to sing to help their speech flow more freely, singing or playing music makes memories flow and allows conversations to happen more easily. When an elderly relative or someone with cognitive impairment can't remember or can't find words to speak, playing music or singing together can help the memories flow. Singing a favorite "oldie" like Elvis's "Love me Tender" might trigger memories of first loves while playing classical pieces might spark conversations about anything from weddings to concerts.