Ritchie Blackmore explains to NJ.com the origins of his instrumental tribute to Jon – Carry On… Jon:
– We were snowed in, in that blizzard (on Feb. 8). The engineer and myself, the producer, we had nothing to do. I said, ‘I have an instrumental that I’ve vaguely finished. Do you want to try it?’
– I wrote it on the spur of the moment. I had a very melancholy kind of tune. Then I started thinking about Jon. I thought maybe we should do an organ part at the end, as a tip of the hat to Jon. Pat Regan is an accomplished organist. We put the organ sound on, and off he went. I guided him on a few things, like riffs and how Jon played syncopation with his right hand.
– So it was a throwaway idea that turned into something. It was something to Jon, a way of saying thanks for the years. It’s hard to talk about, when someone says, ‘What did you think of Jon?’ I’d rather play a tune. We wouldn’t have put it on if we hadn’t been snowed in. Maybe Jon caused the blizzard.
Carry On… Jon is included on Blackmore’s Night’s new album, Dancer And The Moon
Jon Lord - The Official Website 
Jon once said that there are tapes of jamming together with Ritchie !
Blackmore has these tapes and copyrights.
Let’s hope one day to listen to these tunes.
Gentleman Jon will be missed , but his art will live on forever . I think Don Airey did a very fine job capturing the Jon Lord sound on the new Deep Purple CD ” Now What !? “
On your birthday Jon, Gone but not forgotten!
It’s such a beautiful song and an emotional salute from Ritchie to Jon