▁songs ▁that ▁was ▁coming ▁anyway ." ▁ ▁Com position ▁and ▁musical ▁structure ▁ ▁Main ▁portion ▁" All ▁You ▁Need ▁Is ▁Love " ▁contains ▁an ▁asym metric ▁time ▁signature ▁and ▁complex ▁changes . ▁Music ologist ▁Russell ▁Re ising ▁writes ▁that , ▁although ▁the ▁song ▁represents ▁the ▁peak ▁of ▁the ▁Beat les ' ▁over t ly ▁psych ed el ic ▁phase , ▁the ▁change ▁in ▁met re ▁during ▁the ▁vers es ▁is ▁the ▁sole ▁example ▁of ▁the ▁experimental ▁aspect ▁that ▁typ ifies ▁the ▁band ' s ▁work ▁in ▁that ▁genre . ▁The ▁main ▁verse ▁pattern ▁contains ▁a ▁total ▁of ▁ 2 9 ▁be ats , ▁split ▁into ▁two ▁ ▁measures , ▁a ▁single ▁bar ▁of ▁, ▁followed ▁by ▁a ▁one ▁bar ▁return ▁of ▁ ▁before ▁repeating ▁the ▁pattern . ▁The ▁ch orus , ▁however , ▁maintain s ▁a ▁steady ▁ ▁beat ▁with ▁the ▁exception ▁of ▁the ▁last ▁bar ▁of ▁ ▁( on ▁the ▁ly ric ▁" lo ve ▁is ▁all ▁you ▁need "). ▁The ▁prominent ▁c ello ▁line ▁draw s ▁attention ▁to ▁this ▁departure ▁from ▁pop - single ▁normal ity , ▁although ▁it ▁was ▁not ▁the ▁first ▁time ▁that ▁the ▁Beat les ▁had ▁experiment ed ▁with ▁varied ▁met re ▁within ▁a ▁single ▁song : ▁" L ove ▁You ▁To " ▁and ▁" She ▁Sa id ▁She ▁Sa id " ▁were ▁earlier ▁examples . ▁ ▁The ▁song ▁is ▁in ▁the ▁key ▁of ▁G ▁and ▁the ▁verse ▁opens ▁( on ▁" There ' s ▁nothing ▁you ▁can ▁do ") ▁with ▁a ▁G ▁ch ord ▁and ▁D ▁mel