Hi bretonbanquet - that version of "World In Harmony" with Danny's "Phyllis" reference is from the 9 April 1970 BBC radio show - actually the last "live" recording of the song that I'm aware of. While all the songs from this performance were included on the
Show-Biz Blues 2-disc set that came out on Receiver a few years ago, all of the between-song interaction between the radio host and the band were cut out. Some bootlegs, notably
They Play On, preserve the between-song talk from that show, so that's probably where that track from your disc originated. In fact, there is at least one bootleg that lists the title of that track as "Phyllis"!