\textit{Ab Initio} Composite Methods

In this brief presentation, we highlight recent developments of the \textit{ab initio} composite method, the correlation consistent Composite Approach (ccCA). Recent work has enabled ccCA to be utilized for 3d transition metals, as well as for species for which a multireference wavefunction is required. We overview the development, as well as applications of the method to the prediction of spectroscopic and thermodynamic properties of molecules.