Whether it be in her songs or other creative works, she tends to shine a light on raw, sincere emotions, frequently exploring themes of vulnerability, introspection and self-care. Driven by the firm belief that there must be others who recognize these same feelings and, hopefully, feel less alone as a result.

In 2025, Elly Kellner began playing music for the residents of one of Aafje's nursing homes. Aafje is an organization for elderly care, and this particular location houses a small-scale nursing home, primarily for people with various forms of dementia. Initially, she volunteered as a buddy for two residents, sometimes bringing her guitar along to entertain them. After that, she was invited to give small concerts in some of the living rooms.

Smiles all round: some residents closed their eyes and danced with their hands, others sang along or stood up to dance the twist. All emotions were welcome and singing along was encouraged. The connection had a positive effect on everyone present. Now, Elly regularly sings beautiful songs by others, songs she also has fond memories of.