In reply to Chris Hemedinger.

That's quite a collection of bird calls and songs! I didn't find the tune I used to hear, but the first one in this list seems is the closest I've found! A black-capped chickadee? Why not. https://www.allaboutbirds.org/guide/Black-capped_Chickadee/sounds#:~:text=In%20most%20of%20North%20America,on%20Martha's%20Vineyard%20in%20MA.