A tiny song window, transparent with no border. It uses much less space than the standard song window. The icons are too small to really make out but the tooltips are easy to read when the alt key is held down. Works well on either the left or right side of your screen, and is best used in combination with my 'tiniest buff window'.
The song slots are numbered, but the numbers can be easily removed (see instructions at the end of the xml file).