Ancient poetry was often performed to music, and the question arises of what music accompanied a catalectic ending. A few ancient Greek poems survive with authentic musical notation. Four of these are by Mesomedes (early 2nd century CE). Secondary sources of Mesomedes' poems To Helios and To Nemesis are in a catalectic meter known as apokrota "sonorous." In each case, in place of the missing short element of the text (i.e., missing syllable) one often finds lengthening signs. In two cases in To Helios, this appears to be a three-note melisma. It is possible ancient use of catalexis indicated some form of melody or continued singing in place of the missing syllables.