Paintings are interactive for me.  They communicate as not so silent windows from the past.  Art work seen visually, has the potential for other senses to react in the imagination.  Synesthesia defines this transfer of senses and shifts the viewer from a passive onlooker to an active participant.  Trees all bent in one direction translate to me in both hearing and feeling a heavy wind.  Children gleefully at play allow me to hear the giggling in my imagination. Abstract or non-objective work relates as musical notes dependent upon the arrangement of color rhythms and  the style of applied energy.  In my own work, once the piece is gestural enough, with definition for me to imagine an auditory source, it is complete.  Sometimes the sounds are loud and sometimes the sounds for the painting are very soft, almost inaudible.  If you look carefully, you can hear.