heya! not sure if this will help but from the chord progression you can discern the key and mode the song is in (eg D lydian) then just find the easiest place to play this (on guitar it'd be the 1st pentatonic box starting from 10th frett - adding in the 7th and #4th to make it lydian) then with these 7 notes sing the melody and pick along to find the vocal melody (if disonant vocals try neighbouring notes outside the mode too).. not answer to your question but might help..

c'mon you lot, it's a mr bean reference surely!

heist the heisters, good plot twist. you son of a bitch, i'm in!

only problem's that the chickens have human arms You say "that's f#ked up, why do the chickens have human arms?" https://www.youtube.com/watch?v=i2spZ-NDfS4