concerto       
noun [ C ] uk/kənˈtʃɜː.təʊ/ us/kənˈtʃer.t̬oʊ/  concertos or concerti uk/kənˈtʃɜː.ti/ us/kənˈtʃer.t̬i/
 协奏曲
a long piece of music for one or more main solo instruments and an orchestra
  a violin/piano concerto 小提琴/钢琴协奏曲 
 Mozart's concerto for flute and harp 莫扎特的长笛和竖琴协奏曲