This morning, after a relatively good nights' sleep (bloody insomnia!), I once again picked up my ol' practise bass here at home, and tried to play those songs I was 'strugging' thru yesterday.
Well... wouldn't you know it... they had 'stuck' in my head, and it seems I can play them relatively OK...
Yesterday's situation was still very frustrating, all the same.
Thanks to Kay for her continued encouragement... yes, with time and more practise, this stuff will 'come back again' [no pun intended].
Peas be with ewe