Cleaning up a fast passage

Often times fast sequences once we’ve learning the notes become a muddy sounding passage when we start to increase the speed.  One way to “reboot” or “clean up” the passage is to stop the bow between notes, place the left hand finger down, then bow the note.  This process of separating the function of the left and right hands helps to identify fingers lagging behind the bow and identify areas where a new fingering or extra power is required of a certain finger.