Some great songs there!
Greenday - Holiday
Roberta Flack - The First Time Ever I Saw Your Face
Renaissance - Northern Lights
John Miles - Music
I too have a big music collection, so my favourite song has to be whichever one I sing in the morning and at various intervals during the day - I'm a real joy to work with! Another favourite song is Leonard Cohen's "Tower of Song" - a bit deep and moody I know, but good all the same and well worth listening to.
Crocodile Rock was the first record I bought;
I was once serenaded to 'You are my Sunshine' on a crowded beach in Crete, to great applause (and lots of embarrassment from me!);
I could go on....no? Ah well!
By the way - not found Lesley yet, but still looking!