There are many persons who play Harp, Autoharp, & other instruments who are wonderful at providing comfort to those who are bedfast or dying. Many have no specific training or certification whatsoever--just talent, knowledge of some Music & the desire to give Love & comfort to others.
I was just speaking to a Harp teaching pal just the other day about "Harp Therapy." This is not the same as someone who has a degree in Music Therapy. There are folks who will go to someone & pay big $$ to get a certificate to do "Harp Therapy." My pal knows the local gal (has known her for many years) who takes a large amount of $$ from folks to provide them with a certification "program" which she invented not too many years ago. The gal has no formal Music Education or training of any kind in counseling, therapy, or anything related to dealing with the ill or dying.
I also know some Music Therapists who have degrees from acredited universities who are quite good at what they do. I think a good Musician with the desire to share their Music can give a lot of comfort to others.