 With take 6 selected as the best performance , a reduction mix was carried out on 13 April , freeing up space for more overdubs on the four @-@ track tape . Harrison added another vocal part onto what was now referred to as take 7 , and Ringo Starr played tambourine . McCartney contributed a high harmony vocal over the words " They 'll fill you in with all their sins , you 'll see " , but this part was omitted from the final mix . Harrison also overdubbed fuzz @-@ tone electric guitar , controlling the output via a volume pedal . Producer Tony Visconti has marvelled at the guitar sounds the Beatles introduced on Revolver , particularly Harrison 's part on " Love You To " , which he says " sounds like a chainsaw cutting down a tree in Vermont " . 
