Hello, I have a group of people at work I wanted to bake bread for. I wanted to make them something special - this bread seemed to fit the bill!
It was such a pretty bread, as pictured in Advanced Bread and Pastry. With thanks to Mr. Michel Suas for a wonderful, if involved, formula - there are four separate preferments and I had to create a spreadsheet in order to figure out how to scale enough ingredients for 2000g of dough.
I divided into roughly 250g pieces to create as many loaves as I wanted to give (with one extra to keep, for tasting!). 
I sliced the one that achieved the least height & was surprised but happy to find an open crumb, so I hold out hope for the others. 
The caramelized hazelnuts are fantastically, wonderfully delicious in this bread!!!
Regards, breadsong