I have noticed some tightness in my left hand vibrato the last week. Sensed that I was leaning too much on the vibrato for being the expressive element. Today I am in the process of working on expressive playing with only the bow being the tool. This has been helpful in the past and only heightens the adage that the bow is the king or primary means of expression. This was always the statement made by my mentors who had the most interesting and beautiful vibrati. Using old standard rep like Thais, Tchaikovsky slow movement and Swan Lake excerpts. Everything is starting to loosen and my vibrato is starting to incorporate itself into the bow sound more naturally. Back to the room.