  We obtain the Courant bracket twisted simultaneously by a 2-form $B$ and a
bi-vector $\theta$ by calculating the Poisson bracket algebra of the symmetry
generator in the basis obtained acting with the relevant twisting matrix. It is
the extension of the Courant bracket that contains well known
Schouten-Nijenhuis and Koszul bracket, as well as some new star brackets. We
give interpretation to the star brackets as projections on isotropic subspaces.
