It Goes Like This

Dean and Castiel are in an empty bar after a hunt and there's an dusty old grand piano in the corner. The instrument catches Dean's eye and he looks at Cas with a smirk. This is a story of love, loss, and holy redemption; filled with twists and turns, ups and downs that will leave you wanting more.

The story will be updated as regularly as possible.
Partial credit to: @blow_me_Cas for helping me write this.