Why won't the Rhythm Explorer loop my music? You probably haven’t turned on Cue looping—in the expanded Transport Controls, click the Cue checkbox in the Looping area. Now when you select some notes and enter the Rhythm Explorer, Metro will loop the notes, allowing you to really hear the rhythmic changes in context. Hint: click the Zoom box, in the upper right corner of the Transport window, to switch between the expanded and compact sizes