I’ve been listening to some of the songs mentioned in the How Good Was The Year (in music) - 1968? thread. Today was not my first tango with the full 17-minute version of ‘In-A-Gadda-Da-Vida’ by Iron Butterfly, but it was the first time I noticed the organist playing ‘God Rest Ye Merry, Gentlemen’ just after the 11-minute mark.