The Millen Family of Kent referred to all their harmony singing as 'glee-singing' likening it to a 'barber's shop quartet' and, yes, they also sing Spofforth's 'Hail, Smiling Morn'. They also thought of 'Buttercup Joe' as a glee song, although they mostly held that term referred to their Christy Minstrel songs.

In my research, I wrote to the late Bob Copper, when I realised the Millens shared a common repertoire, who told me that the Copper Family never thought of themselves as glee singers. Having said that, harmony singing and catch clubs were popular one hundred years ago judging by local newspapers.