using using a axe+2 atm also, dont know if i should try diff weapons either, most the ones that interest me either come later in the game or the dungeon thingies, like that gun/sword thingie
Oki, if you're still having trouble, then use the gravestones as a terrain block and circle around them using the axe's L2 swing to arc over the stones and hit Gascoigne. Don't use the music box until he changes to Beast form, but also remember it's only good for one use when he's in beast form. Take advantage of his transformation time and get a swing or two in then.
Also you can douse him with oil urns and throw molotovs on him when he's in beast form for big damage. When he's in Beast form, focus on dodging and taking 1 or 2 oppurtunity swings when he gives you an opening. Also if you need to heal really badly, sprint around either the massive headstone in the center of the plaza or up the stairs and to the left. Either way you won't have much time, he moves very fast, so you have to focus and speed up your thought process and reflexes.