The term 'Organ Setting' is a musical term that refers to the combination of instruments used in an organ composition. The two crossword solutions for this term are 'STOP' and 'OBOE, ' both of which are four-letter words. A 'STOP' is a type of organ pipe that produces a specific sound, while an 'OBOE' is a woodwind instrument that is often used in classical music. Together, these two instruments create a unique sound that is often used in organ compositions.