Не сладких нег, не благонравности пороков,
И долго будете в гробу своём страдать,
За то, что внемлели не истиной природе,
А безобразному горланию калек.
This was actualy from the "Литературная газета"!
I think there is not a real noun, but the example just goes to show that if you really really want to have one, you can. You just need ...err...poetic license.
Would you like to describe a process or a phenomenon? I could imagine a phrase such as "беспрестанное горлание пьяных песен" or something of the kind. Even then it wouldn't be a full-time word , but rather a spontaneous coinage. Горлопанство or горлодёрство would denote the corresponding "phenomenon" but you are probably not interested in those as they are not directly derived from горланить.
EDIT: we seem to agree on most matters, don't we, Papillon?