The Louisville Leopard Percussionists are an after-school group comprising more than 60 children aged 7-14 and they previously recorded a Led Zeppelin medley featuring Kashmir, The Ocean and Immigrant Song.

But the Courier-Journal reports it was their cover of his 1980 track Crazy Train from his Blizzard Of Ozz album that caught Osbourne's attention, and he sent them the donation with a note.