I define music as a socialising medium of communication. Humans use it to create patterns with sound and silence. These sounds and silences are typically arranged as songs, both literal and metaphoric. They include organised and intentional performances, spontaneous outbursts, rehearsals and recordings. 

Brader, Andy (2010) p. 6.*

*Producing Better Outcomes: Music and Public Services in Songs of Resilience. Cambridge Scholars Publishing