Hi Rocky, I’m sure if you run through all the possible Marx’s you’ll get this. Curious that in 1d Picaroon tells us that the singer is from the US, but in the case of 23d not that the media personality is.
agree with jono @ 13 - P's anagram indicators - modified, funny, when drunk, fit so well into the surfaces, as do his modifiers - embraced, without clothing. I disagree with chrise even about 13 - after all it's the one thing one wants to know if away from the match ....