I am losing it... I thought I hit "Submit" when I originally composed this ...evidently not when I went back to check. So if it shows up twice....The only one that readily comes to mind is a vintage country song by Hank Williams, called (I think) "Dear John." In the key of E it plays 4 bars of E in 4/4 time, then one bar of 6/4 time, the first 4 beats being in E and the last 2 beats changing to B7.
Getting older sucks.
Regards, Neil