het·er·oph·o·ny 
(hĕt′ə-rŏfə-nē)
(hĕt′ə-rŏfə-nē)n.
The simultaneous playing or singing of two or more versions of a melody.
het′er·o·phonic (-ər-ə-fŏnĭk) adj.
- squamous
- squamous cell carcinoma
- squamous epithelium
- squamously
- squamousness
- squamule
- squamulose
- squander
- squanderer
- squanderingly
- Squanto
- square
- square away
- square bracket
- square dance
- square-dance
- square dancer
- square knot
- squarely
- square matrix
- square meal
- square measure
- squareness
- square off
- square one