A prepared piano is one whose notes and tones have been altered by placing unconventional materials on or between the strings.
A strip of rubber here, a metal bolt there - objects like these cause the piano to speak a language of unpitched buzzes, sonorous thumps and delicate rattles.
Pianist and composer Stephen Montague lifts the lid on piano preparation, exploring the invented sound worlds of John Cage, Conlon Nancarrow and Lou Harrison.
/ In The Company Of Mushrooms: John Cage was obsessed with mushrooms.
Ivan Hewett explores his own obsession with mycology with chef, Antonio Carluccio and author, Elios Schaechter.