▁ ▁The ▁number ▁of ▁different ▁names ▁for ▁the ▁same ▁dance ▁should ▁not ▁be ▁surprising , ▁the ▁dance ▁is ▁older ▁than ▁the ▁modern ▁German ▁language . ▁Nor ▁should ▁one ▁be ▁surprised ▁that ▁the ▁t unes ▁themselves ▁have ▁multiple ▁names . ▁One ▁German ▁dance ▁research er , ▁Felix ▁Ho er burger , ▁catalog ued ▁ 1 1 2 ▁different ▁Zw ief acher ▁t unes ▁with ▁ 4 7 4 ▁different ▁names . ▁ ▁Rh ythm ▁The ▁Zw ief acher ▁altern ates ▁between ▁odd ▁and ▁even ▁time ▁sign atures , ▁changing ▁from ▁ 3 ▁to ▁ 2 ▁be ats ▁per ▁bar . ▁The ▁changes ▁may ▁occur ▁regularly ▁- ▁for ▁example , ▁two ▁measures ▁per ▁time ▁signature , ▁may ▁change ▁only ▁once ▁or ▁may ▁change ▁irregular ly ▁throughout . ▁Early ▁Zw ief ach ers ▁were ▁played ▁before ▁the ▁modern ▁bar ▁line ▁was ▁invent ed . ▁ ▁Ch ore ography ▁ ▁The ▁couple ▁turns ▁very ▁quickly ▁in ▁a ▁closed ▁position , ▁similar ▁to ▁the ▁W alt z . ▁Phys ically , ▁the ▁rh yth mic ▁shift ▁looks ▁like ▁a ▁change ▁from ▁normal ▁w alt z ▁steps ▁to ▁dre her steps ▁( p iv ots ), ▁occasionally ▁also ▁to ▁pol k aste ps . ▁ ▁L yr ics ▁ ▁L yr ics ▁were ▁often ▁created ▁as ▁a ▁m nem onic ▁device ▁to ▁help ▁learn ▁Zw ief ach ers ▁mel od ies ▁by ▁heart . ▁This ▁led ▁to ▁many ▁song text s ▁for ▁the ▁same ▁mel od ies . ▁New ▁lyr ics ▁are ▁still ▁sometimes ▁used ▁together ▁with ▁old ▁mel