Hi, Rusty!
Welcome to my world!
I think it's only time to worry, though, when "senior" moments become "senile" ones!
4d is a good clue - I can see that, now you have explained it to me!
Now 11a, yes, I got that "under wraps" meant "hidden", but entirely missed the homophone of "raps".
I understand it now, thank you!
16a melange = mixed collection (def)
anagram of "male " round "elan" (style) and eg (reversed)
I liked that one!
( I didn't know GOM either ?)
I am just going out with the dog whilst the sun is shining.......