The phrase "highly unusual juxtaposition" refers to the placement of two things that are unexpected or unusual when seen together. Some synonyms for this phrase are "strange combination," "curious pairing," "bizarre union," "unexpected intersection," or "odd coupling." When applied to art or music, it may also be called a "peculiar blend," "eclectic fusion," or "jarring contrast." These phrases can be used to describe any situation or context where two disparate things are brought together in a way that catches people off guard. No matter the synonym used, the implication is that this combination is out of the ordinary and therefore noteworthy.