Actually, "Lonely rivers flow to the sea, to the sea, to the open arms of the sea" is from "Unchained Melody."
The bridge to ICHFILWY is "Like a river flows surely to the sea, darling, so it goes: some things are meant to be."

When I play it, the chord I use there is B minor, I think. I play it in G, I think. (Don't have a guitar in my hands at the moment.   It's that there playing in the key of C# that complicates things, I think.   (Can you use capos on dulcimers?)