TABLE 1.

Participants’ selection criteria.

Type of participants	Inclusion criteria	Exclusion criteria
OPDs	• Interest in the project and signed consent form • Age 65 + • To be able to see, hear and move • Diagnosis of MCI or dementia with mild to moderate impairment (MoCA total score ≥ 10/30) • Absence of aphasia (mild acceptable) • Be able to understand and undertake simple task as required during activities	•Lack of consent to participate • Age 65− • Not be able to see, hear and move even with the help of appropriate aids • Absence of formal diagnosis of MCI or dementia or severe level of impairment (MoCA total score ≤ 10/30) • Moderate to severe aphasia • Not able to understand and undertake simple task as required during activities
DCPs	• Having experience in the dementia field (e.g., educators, occupational therapists, physiotherapists, psychologist, sociologists, nurses, music therapists, professional caregivers, doctors) • Having interest in the project and signed consent form • For the (co-)facilitators and internal/external observers: having completed the SOUND training	• Lack of experience working in the dementia field • Lack of consent to participate • For the (co-)facilitators and internal/external observers: lack of completion of the SOUND training