An important factor in this phenomenon was the rise of virtuoso cellist Mstislav Rostropovich. His outstanding technique and passionate playing prompted dozens of composers to write pieces for him, first in his native Soviet Union and then abroad. Among such compositions may be listed Sergei Prokofiev's Symphony-Concerto, Dmitri Shostakovich's two cello concertos, Benjamin Britten's Cello-Symphony (which emphasizes, as its title suggests, the equal importance of soloist and orchestra), Henri Dutilleux' "Tout un monde lointain...", Cristóbal Halffter's two cello concertos, Witold Lutosławski's cello concerto, Dmitry Kabalevsky's two cello concertos, Aram Khachaturian's "Concerto-Rhapsody", Arvo Pärt's "Pro et Contra", Alfred Schnittke, André Jolivet and Krzysztof Penderecki second cello concertos, Sofia Gubaidulina's "Canticles of the Sun", Luciano Berio's "Ritorno degli Snovidenia", Leonard Bernstein's "Three Meditations", James MacMillan's cello concerto and Olivier Messiaen's "Concert à quatre" (a quadruple concerto for cello, piano, oboe, flute and orchestra).