This story reminds me of the Nike logo one, quote Wikipedia: For her services, the company paid her $35 ($206 in 2015 dollars), citing that she worked 17.5 hours on creating the Swoosh.
What would appropriate "fair use" look like? And evidently, the fact that Yahoo made it their branding was something legally different than a local performance. Odd system we have.
The Intel jingle is only four notes, but Walter Werzowa's done rather well out of being paid to compose variants of it and it's rather more famous than his actual records...
Also would "fair use" in your mind apply to anyone else too? Not sure Yahoo would want to go all brand heavy on something anyone else could pick up either.
"By Mennen" is 3 notes. The Sprint pindrop was...1?