River Help/Sequence Launcher/Piano Roll/ Tools Five tools on the home row. Edit Tool ASelect Tool SErase Tool DVelocity Tool FProbability Tool GEvery tool but Edit works through a round brush that grows with the speed of the stroke. In this sectionEdit ToolDraw, move and resize notes.Select ToolBrush notes into the selection.Erase ToolDelete what the brush passes over.Velocity ToolPaint how hard notes are played.Probability ToolPaint how likely notes are to sound. PreviousOptions BarNextEdit Tool