From the archived material of Mr. Benno Weis z’l. I was told by a bar mitzvah boy who studied under Mr. Weis that the famous Karnei Parah (and Yerach ben Yomo) which appears once in the Torah (and once in the Megilas Esther) was leined in the summer when the regular Baal Korei was away in Frankfurt. And, therefore, his tune for it was not necessarily accurate. It clearly mirrors the corresponding trup in megillas Esther available here. Karnei Parah in Esther HERE.

I bounced this off of a current KAJ baal koreh and he thought the idea that his karnei parah is improvised sounds false. Mr. Weis’s daughter confirmed this – that he didn’t learn it from the regular baal korei, and had to “make it up”- but won’t swear on its accuracy.

Anyhow….here is his rendition off of his archived recordings (available on the website of Dartmouth University and currently in the process of being shared more widely)-

Here is a sampling of the reading of the Masa’os in the parsha.

I am working on confirming the above further, and might elicit the above in the style of one of the current baalei keriah at KAJ. I will add their contribution then.