Books found today of particular interest I will list here in the Harvard style ready for use in my reference list:
Byrne D. 2012: Preface How Music Works, San Francisco, McSweeney’s
Eisentraut J. 2013: The Accessibility of Music; Participation and Contact, UK, Cambridge University Press.
Scott C.K. 1901 Rev.1931 Madrigal Singing, London, Oxford University Press