Wiktionary
chroma key
n. (alternative spelling of chromakey English)
Wikipedia
Chroma Key
Chroma Key is a band of Kevin Moore, known for his work with the bands OSI and Dream Theater. Although primarily a solo project, several other musicians have recorded as part of the band such as bassist Joey Vera, drummer Mark Zonder, and guitarist Jason Anderson.
Chroma Key's music is a mix of psychedelia, electronica and ambient, with detailed keyboard sounds and a slightly dark mood.