Elgin Mansions is one of the most beautiful pieces Rick ever recorded in my opinion. This version here is different to the one included on the album 'Silent Nights' which has added instrumentation dubbed onto it.
Following Apollo59's observation, I am pretty sure that this version of the A Side is longer than the one on 'Plays Live'. 'Kiss of Life' really should have been added on the reissue of 'Plays Live' which is a double CD with plenty of space on both disks.