(Roses duet on These Days with Allman was another show highlight.)

Its a kind of family reunion.

We get to see everyone and celebrate one of the best songbooks in rock & roll.

Slash, Allman Brothers

Slash performing with the Allman Betts Family Revival in NashvilleMickey Bernal/GettyImages

As for landing Slash on the bill, Allman said he was simply free and into it.

The GNR co-founders new blues album Orgy of the Damned didnt hurt.

I think hes wanting to jump into some circles that are a little more blues-oriented, Allman said.

Were just happy to have him.