Do you know the meaning of the title of this tune?
In the Ultimate DJango book it is said that R26 is a reference to the home of a certain friend in a certain street. Later, we learned that it was the house of the parents of Jacotte Perrier. But did you know that the name R26 is not an invention of Django and Stephane? I just read that it was the name of a private club (gathering of famous artists in Montmartre) held by Robert (R) Perrier and his family at their apt 26 rue Norvins.
If you want to read further, Wikipedia page of the club
and a show is trying to recreate the atmosphere of the club these days, you can listen to a podcast about it here Spectacle R26