That's the one. The live version of Breakthrough with Rick Wright is brilliant. I believe that song was supposed to be on the Division Bell but wasn't ready in time.
That's right, Gilmour said at the time he dearly wished Rick had written that song in time for The Division Bell, but alas he hadn't.
Broken China (Rick Wright's 1996 solo album) has some of his most beautiful songs. Aside from 'Breakthough', 'Reaching For The Rail' (absolutely gorgeous, I'm surprised David didn't single this one out along with 'Breakthrough' - imagine Gilmour singing Sinead O'Connor's vocals here) and 'Along The Shoreline' are as good as anything Floyd did after The Wall to my ears.