A schedule of performances arranged for at least one month in advance is most important. There should be a regularity to performances even if they occur only once a month. It will give patients something to which they may look forward with the pleasure of anticipation. Whenever possible, musical programs should be prepared for the same weekday or night. These appearances should be announced or posted to increase the interest. In hospitals for the chronically ill there is usually an assembly hall or recreational building, where entertainment may be given for ambulatory patients. The appearance of famous musicians on its stage will be rare or impossible, especially in hospitals not located near large cities. This is not as unfortunate as might be believed, because although some patients are impressed with names of national reputation, maximum enjoyment will result for the majority from listening to their fellow patients performing. Patient participation is always more desirable for the ambulatory than passive entertainment. Patient music may take one of three forms--formal, amateur, or spontaneous. Formal presentations require much work on the part of the musical aide and the patients. Orchestras of variable size may be formed, depending upon the number and variety of talented patients. Inasmuch as quality of performance is the prime consideration, the repertoire of such groups will not be great. At the outset it will take almost a month to develop a one hour variety program. With the progress of time and increased work and co-operation it should be possible to rehearse enough new numbers each week to produce a weekly program with too few repetitions to arouse complaints on the part of the patients. The program should contain all types of music so that during the course of a performance almost everyone in the audience will have heard something to his taste. Vocal numbers are welcome and audience participation at one or two points will sustain interest. It is advisable for some one to act as master of ceremonies to announce selections and to evoke maximum response from the non-participating patients. There is usually one patient with a desire to be a master of ceremonies and, if he executes his work well, this will be a valuable asset to the project. A master of ceremonies is important and if necessary an outsider should be secured for this purpose.