All done - very satisfying puzzle (thank you, Awinger) with some very challenging clueing, but all seen to be fair eventually.
I was going to complain about a misleading preamble, as I've been under the firm belief for many decades that the song title in question, in its official published form, very wittily featured the punning homophone - and hence the four examples of the homophone of that should have been nakedly obvious - but I see on referring to lyrics.com that the less-amusing homophone is indeed the official version.
Pity.
I'm completely baffled by the hints to the solution of the title 'An Overt' by Drxx #14; Dsc #29; Mooncow #36, #38; and Buddy #37 ; I can see that the second element only makes sense as a thematic(-ish) word 'stripped' of its two outer letters - but why should either or both elements have to be 'stripped' when this operation is not indicated in the preamble, nor applied to any other words in the puzzle?
And why is this word singular when the corresponding thematic words are plurals?
If this results in four 'extra' letters, do these form a thematic four-letter word? If so - or if not - I cannot make a convincingly thematic word or phrase for the title by restoring any combination of two letters around the 'An' element.
As usual, I'm probably one of little brain, and missing essentials.