Programs that offer a form of therapy which uses music and music-related activities to address the physical, emotional, cognitive and social needs of individuals with mental, physical or developmental disabilities, substance abuse disorders, chronic health conditions or other problems. Music therapists assess emotional well-being, physical health, social functioning, communication abilities, and cognitive skills through musical responses; and design music sessions for individuals and groups based on client needs using music improvisation, receptive music listening, song writing, lyric discussion, music and imagery, music performance and learning through music. Music can thus be used as a passive agent as in the case of listening to music to aid in reminiscence, reality orientation or relaxation; or as an active creative process in which the individual participates in musical production. Through musical involvement in the therapeutic context, clients' abilities are strengthened and transferred to other areas of their lives. Music therapy also provides avenues for communication that can be helpful to those who find it difficult to express themselves in words.