TabScout.

Farewell Ballad have at least 4 versions that two of them are officially released or shown on the internet and live shows. one is a short version demo with 1:36 duration that Zakk Wylde first made of and also a late-released full version with Piano, Drums and Bass with 3:07 duration that is called Custom and Original version on the internet.
lots of guitar players made a cover of Farewell Ballad which is not to get confused with Zakk's official release.