“Phil Collins: Drummer First” (*1/2 out of four) was a surprisingly dull documentary about the legendary musician who started out as a drummer and gradually transitioned to being one of the most popular and commercially successful singers of all time but always considered himself a drummer at heart. A one-note and monotonous look at a musical legend with perfunctory interviews that are hardly revelatory or revealing. For a much richer and more entertaining look at Collins, watch VH1’s Behind The Music on Genesis instead.