I am more familiar with the Moodies led by Justin Hayward..
*swoon*
Ahem!
A waltz, yes, I was counting 1 2 3 1 2 3 all the time the sing was playing..
LOL
If you want the earliest Moodies with Hayward involved, bring up “Nights in White Satin”, but get the long version where Graeme Edge recites the poetry at the end that makes your knees go all wobbly.