Joanna Eden will sing Christmas favourites and lesser known festive baubles with Chris Ingham on piano, George Double on drums, Mark Crooks on sax and Arnie Somogyi on bass.
Grosvenor has been described as "one in a million -several million" by The Independent, and as "a keyboard visionary" by the Süddeutsche Zeitung.
There are tutorials online so that the audience can learn the parts and join in live.
Joe Brown has won over a new generation of fans performing on Later With Jools Holland, at the Concert For George Harrison and Glastonbury.
"I can still sing the songs, in some ways better than I did in the 70s."