Free yourself from the shackles and chains of chords ,scales and modes. Ther are two exercises I use to help me "relax",which is important if your going to improvise: 1.Scribble....play as fast as you can.No scales,modes or tempo...play soft,play,loud.Give your scribble dynamic but dont restrict it. 2.Ghost...copy the sounds around you.As soon as you hear it.Again try not to structure your interpretaion of the sound.

Eyes closed please,lets not get distracted with visuals. Have fun.