[PAR] [TLE] Igor Stravinsky [SEP] Igor Fyodorovich Stravinsky (sometimes spelled "Strawinski", "Strawinsky", or "Stravinskii"; Ukrainian: І́гор Фе́дорович Страві́нський , ] ;Russian: И́горь Фёдорович Страви́нский , "Igorʹ Fëdorovič Stravinskij"; ] ; 17 June [O.S. 5 June] 1882 6 April 1971) was a Russian Empire-born composer, pianist, and conductor.  He is widely considered one of the most important and influential composers of the 20th century. [PAR] [TLE] Jeanne Deroubaix [SEP] Jeanne Deroubaix (born 15 February 1927) is a Belgian mezzo-soprano, focused on concert performances of Early music and contemporary music.  She premiered music by Igor Stravinsky and collaborated with Pierre Boulez, performing and recording his "Le marteau sans maître".
[PAR] [TLE] Igor Stravinsky [ SEP ] Igor Fyodorovich Stravinsky ( sometimes spelled " Strawinski " , " Strawinsky " , or " Stravinskii " ; Ukrainian : І́гор Фе́дорович Страві́нський , ] ; Russian : И́горь Фёдорович Страви́нский , " Igorʹ Fëdorovič Stravinskij " ; ] ; 17 June [ O.S. 5 June ] 1882 6 April 1971 ) was a Russian Empire - born composer , pianist , and conductor . He is widely considered one of the most important and influential composers of the 20th century . [PAR] [TLE] Jeanne Deroubaix [ SEP ] Jeanne Deroubaix ( born 15 February 1927 ) is a Belgian mezzo - soprano , focused on concert performances of Early music and contemporary music . She premiered music by Igor Stravinsky and collaborated with Pierre Boulez , performing and recording his " Le marteau sans maître " .
What century was the composer of the music Jeanne Deroubaix premiered influential?
What century was the composer of the music Jeanne Deroubaix premiered influential ?
20th century
20th century