A chorus is a group of SINGERS that perform together, often in an ENSEMBLE. The term 'MELODY' refers to the main tune of a song, while 'SINGERS' are those who perform it. 'CONSONANCE' is the AGREEMENT between two or more notes, and 'STRAIN' is a single phrase of a MELODY. An 'ENSEMBLE' is a group of musicians playing together, and 'AGREEMENT' is when two or more people come to a consensus. A 'CHANT' is a repetitive song or phrase, and a 'CHOIR' is a group of SINGERS that perform together. 'ACCORD' is another word for AGREEMENT, and an 'INCANTATION' is a CHANT or spell used in rituals. A 'REFRAIN' is a phrase or line that is repeated throughout a song, and 'mens' is a type of CHOIR made up of only male voices.