Belmont

I had a dream the other night.  I worked in a bank.  There was the possibility I was losing my job.  It would be decided by a “Survivor” type vote.  I wasn’t voted out, and people began singing some song to the tune of Belmont by way of congratulation (celebration?).  Upon waking I lay there for almost an hour, trying to recall what hymn that tune belonged to so I wouldn’t forget.  It’s There is a fountain opened wide (Book of Praise #351).  That is not one of my favourite hymns, so where did it come from?!