Noun
synesthete (plural synesthetes)
Alternative spelling of synaesthete
Jason would eventually learn his injury had made him an acquired savant and synesthete, someone whose blended sense perception causes such strange effects as the ability to taste shapes, hear colours and see numbers as geometric objects. Source: Internet
I believe Laura Nyro was another synesthete, based on an interview with a producer who said she once asked a studio technician to make the horn section sound "more red." Source: Internet