My son is currently a jazz performance major at Peabody (Johns Hopkins). His scholarships are small – in fact, they were the smallest of all the schools who offered him.
The biggest came from Bard College (not the Conservatory, since jazz isn’t part of the conservatory), which offered scholarships worth 75% of cost of attendance (COA). The second biggest – which he almost accepted – was from The New School, which offered $$$ worth 50% COA.
Hope that helps.