Does anyone have any specific left hand exercises or progressions that have helped them become more fluid and accurate with full chord changes? I find that when I learn new songs, I still stumble over new shapes/positions that I have not played before. It still takes me quite a while to make the new change smoothly and fluidly within the song. So I was wondering if there are some left-hand chord changing progressions that generally help with left hand chord change mechanics? Thanks.