We are music fans and would love to visit a jazz/blues/soul nightclub when we visit Paris in the spring. We will be staying in The Marais. Thank you.
Two of the best jazz clubs in Paris are next to each other (Lombards Street) near the Marais:
Le Duc des Lombards:
https://ducdeslombards.com/en/home
https://www.youtube.com/watch?v=Kaycblv1xVw
And the Sunset-Sunside:
https://www.sunset-sunside.com/
A third is even closer to the Marais, but I've never been there:
38Riv Jazz Club, Rivoli Street