▁with ▁the ▁c rot ch et ▁being ▁t uck ed ▁in ▁on ▁the ▁last ▁sy ll able ▁before ▁the ▁bar line . ▁If ▁there ▁is ▁only ▁one ▁sy ll able , ▁both ▁notes ▁are ▁s ung ▁to ▁it ▁in ▁quick ▁succession ▁with ▁the ▁subt le ▁emphas is ▁being ▁on ▁the ▁first ▁note . ▁ ▁Sometimes ▁the ▁last ▁bar ▁of ▁a ▁quarter ▁has ▁two ▁minim s ▁instead ▁of ▁the ▁usual ▁sem ib re ve , ▁in ▁which ▁case ▁a ▁dot / hy phen ▁may ▁be ▁required ▁after ▁the ▁last ▁bar line ▁in ▁the ▁text : ▁( e . g . ▁even ▁as ▁' ▁though ▁they ▁' ▁were ▁mine ▁' ▁en e - m ies .) ▁ ▁Part icular ly ▁in ▁long ▁ps al ms , ▁changes ▁of ▁chant ▁may ▁be ▁used ▁to ▁signal ▁them atic ▁sh ifts ▁in ▁the ▁words . ▁Ps alm ▁ 1 1 9 , ▁which ▁is ▁the ▁longest ▁in ▁the ▁ps alter , ▁is ▁generally ▁s ung ▁with ▁a ▁change ▁of ▁chant ▁after ▁every ▁ 8 ▁of ▁its ▁ 1 7 6 ▁vers es , ▁corresponding ▁to ▁the ▁ 2 2 ▁st anz as ▁of ▁the ▁original ▁Heb rew ▁text . ▁However , ▁it ▁is ▁never ▁s ung ▁all ▁at ▁once , ▁but ▁spread ▁over ▁success ive ▁days . ▁ ▁Double , ▁triple ▁and ▁quad ru ple ▁ch ants ▁The ▁example ▁above ▁is ▁a ▁single ▁chant . ▁This ▁is ▁mostly ▁only ▁used ▁for ▁very ▁short ▁ps al ms ▁( half ▁a ▁dozen ▁vers es ▁or ▁so ). ▁ ▁The ▁most