quar·tette /kwɔrˈtɛt/
  四重奏[唱] ;四個一組
  Quar·tet, Quar·tette  n.
  1. Mus. (a) A composition in four parts, each performed by a single voice or instrument. (b) The set of four person who perform a piece of music in four parts.
  2. Poet. A stanza of four lines.
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  quartette
       n 1: four performers or singers who perform together [syn: quartet]
       2: a set of four similar things considered as a unit [syn: quartet,
           quadruplet]
       3: four people considered as a unit; "he joined a barbershop
          quartet"; "the foursome teed off before 9 a.m." [syn: quartet,
           foursome]
       4: a musical composition for four performers [syn: quartet]