A duet passage in:

or

for some funky flute with percussive guitar, followed by some vocal harmony in:     

'Quartz', a guitar reel  which uses quarter tones , and like 'See You Soon' is accompanied by Richards foot operated 'Barytar':

Andrea's flute improvisation in :

Compositions: Heaney (All Rights Reserved. Online listening of these samples is of course free, but copying them isn't, since they are registered with the French SACEM. )

7 Echantillons du concert à St Rom' en Juin: