So what does this mean then. Basically it means songs originally sung by men being covered by female glee characters and vice versa! The entire song must be gender swapped for it to count (For example Come What May isn’t here because although Kurt sings what originally was sung by a woman Blaine is singing the male part still!). There being one exception to the rule, Sing! As in that glee purposely swapped the gender roles (Mike singing the entire female part and Tina singing the entire male part).