Det här är faktiskt Alfred Besters "The Demolished Man" där huvudpersonen Ben Reich planerar mordet på en affärsrörelse. Han använder en "jingle" från en associerad låtskrivare som fungerar som en öronorm för att blockera hans mordiska avsikter från Espers.
Från Wikipedia :
Reich contacts D'Courtney and proposes a merger of their concerns but Reich's damaged psychological state causes him to misread D'Courtney's positive response as a refusal. Frustrated and desperate, Reich determines to kill Craye D'Courtney. The presence of peepers has prevented the commission of murder for more than 70 years so Reich devises an elaborate plan to ensure his freedom. If caught Reich will certainly face "Demolition", a terrible punishment described only at the end of the story.
[...] To further conceal his intentions from telepaths, Reich visits a songwriter, Duffy Wygand (spelled "Wyg&" in the text) who teaches him a deceptively simple jingle:
Eight, sir; seven, sir;
Six, sir; five, sir;
Four, sir; three, sir;
Two, sir; one!
[...]
This proves to be an earworm, so persistent and involving that it blocks most Espers from properly peeping into Reich's mind.