Thanks for that jazzlover - it now makes sense to me.
I see you have a slightly different set of initials, but they all look to be right barring 21ac (the other E). 21ac is a thematic clue using CAB.
You now have L (21ac) O N T I G L A D Y and, judging by your last comment, you've found the other 4 letters.
It was quite a challenge!