Programs that provide organized opportunities for individuals who play a musical instrument or enjoy a particular style of singing to join a group and play or sing collaboratively with others who have the same skills and interests or to listen to the music of their choice in the company of other enthusiasts.

Family members, friends, neighbors and others who assume responsibility for attending to the daily needs of individuals who are temporarily or permanently unable to care for themselves due to general frailty; illnesses, injuries or progressively debilitating conditions such as Alzheimer's disease or mental illness; or other incapacitating problems without compensation. Some, but not all, states have programs that help people pay for the caregiver of their choice, and in certain circumstances that can be a family member. Most of these programs have income and other eligibility requirements that the care recipient must meet, and strict rules often apply as to who can be paid for the caregiving. Benefits may also be available for veterans and their families through the Veteran's Administration.

An acquired reduction in mental capacity that is characterized by impairment of memory, judgment and intellectual functioning which is often accompanied by behavioral disturbances.

An age-related, non-reversible brain disorder that develops over a period of years. Initially, people experience memory loss and confusion, which may be mistaken for the kinds of memory changes that are sometimes associated with normal aging. The symptoms gradually lead to behavior and personality changes, a decline in cognitive abilities such as decision-making and language skills and problems recognizing family and friends; and ultimately to a severe loss of mental function. Alzheimer's disease is one of a group of disorders called dementias that are characterized by cognitive and behavioral problems. It is the most common cause of dementia among people age 65 and older.

The parents, children, spouses, partners, friends or other relatives or significant others of people who have Alzheimer's disease or a related dementia, whose own patterns of personal, social and familial coping have been significantly affected by concern about the individual.