Blues Jam Night - The Prince of Wales - Marlow.

It's back at a new venue 'The Prince of Wales, the 1st Thursday monthly from February, as per 'Rupes' Facebook entry.
The Prince of Wales, Marlow SL7 1PX.

It has a small car park in front of the building, so street parking probably required.
The house band music usually starts at 8:00pm for 30mins, continues with various performers till 23:00pm.
The pub will be open, I will get there at 8:00pm to get a good seats to the left of the entrance and look out for those coming.
This is usually free, but sometimes they have an optional cash collection to cover guests artist travel expenses, also house band equipment used by several musicians.
It is in the main bar so plenty of seating and standing room, musicians and singers performing in the main bar.
Pub has a food menu, pizza, etc.
Some people come from South Bucks Social group.