▁by ▁Claude ▁Deb uss y , ▁Maurice ▁R avel , ▁his ▁close ▁friend ▁Per cy ▁Gra inger , ▁Richard ▁Stra uss ▁and ▁Ig or ▁Stra vin sky . ▁His ▁experiments ▁in ▁free ▁rh ythm , ▁generated ▁by ▁expand ing ▁musical ▁mot ifs , ▁above ▁all ▁in ▁his ▁First ▁P iano ▁Son ata ▁of ▁ 1 9 0 9 , ▁appear ▁to ▁have ▁ex ert ed ▁an ▁influence ▁on ▁Stra vin sky ' s ▁The ▁R ite ▁of ▁Spring ▁. ▁He ▁used ▁to ▁be ▁known ▁as ▁' the ▁English ▁Deb uss y ', ▁though ▁this ▁reflected ▁little ▁knowledge ▁of ▁Scott ▁and ▁little ▁understanding ▁of ▁Deb uss y . ▁ ▁Among ▁his ▁orch est ral ▁compos itions , ▁the ▁First ▁P iano ▁Con cer to ▁( 1 9 1 3 – 4 ), ▁Dis aster ▁at ▁Sea ▁( a ▁tone ▁poem ▁on ▁the ▁s inking ▁of ▁the ▁T itan ic , ▁composed ▁in ▁ 1 9 1 8 – 2 6 , ▁and ▁published ▁in ▁a ▁re vised ▁version ▁with ▁the ▁title ▁Ne pt une ▁in ▁ 1 9 3 5 ), ▁the ▁Vi olin ▁Con cer to ▁( 1 9 2 8 ), ▁and ▁Ne ap ol itan ▁R haps ody ▁( pub lished ▁ 1 9 5 9 ) ▁are ▁the ▁most ▁important . ▁The ▁shorter ▁piano ▁works ▁suffer ▁in ▁the ▁main ▁from ▁un im agin ative ▁form ▁and ▁texture , ▁though ▁the ▁five ▁' Po ems ' ▁( 1 9 1 2 ) ▁are ▁an ▁important ▁exception ; ▁more ▁worthy ▁of ▁rev