Empty Spaces Pink Floyd

[Intro]
Roger Waters: .yakO
James Guthrie: !enohp eht no s’enyloraC !regoR
Roger Waters: …tnoflahC ,mraF ynnuF eht fo erac ,kniP dlO ot rewsna ruoy dnes esaelP .egassem terces eht derevocsid tsuj evah uoY .snoitalutargnoC … akuL ,olleH

[Verse: Roger Waters]
What shall we use to fill the empty spaces
Where we used to talk?
How shall I fill the final places?
How should I complete the wall?