There are probably a few mistakes here. I'm not very good with identifying songs, so please correct me if you find a mistake!! As far as the strumming, its pretty much just like quarter notes. Listen to it on youtube... Some other parts are single strum, where I pointed it out. :) Thanks! Enjoy... Key of , no capo OOOOOOOOOOH! Happy Hogwarts Birthday! Magic wizard birthday! Fun wizard happy birthday! Fun fun fun fun! Magic flavor birthday cake! Wizard wishes you will make! Happy birthday dance with everyone 2, 3, 4... (single strum until chorus) Birthday magic wand! Party happy birthday! Wizard party school! Magic magic wizard magic party! Gryffindor! Party more! Hufflepuff! Wizard stuff! Ravenclaw! Hell naw! Pretty sure that's everybody! (strum again) Happy Hogwarts birthday Wizard School party! Children eating cake inside their mouths! Hogwarts lesson number 1 Never not be having fun! Children eating cake inside their mouths!
https://lyrics.primanota.net/misc-unsigned-bands/potter-puppet-pals-happy-hogwarts-birthday.htm