guys im wondering whether you can make a redstone circuit that opens the door and also rings a bell at the same time ?
Yup that can be done easily enough, as Mirrur said, give us a few more details I'm sure we can sort it for you no problem. Specific tune in mind? more notes, more complicated, more expensive Also the power source, button, pressure plate, lever? Plate probably the easiest and will look the best, buttons are awkward as they will need to be on the bottom block beside the door or you will need redstone at floor level inside. Space for the redstone and note blocks inside the house or will they be underground? Underground probably best again here, don't want visible redstone in house