Pyotr Nikolaevich Meshchaninov (Russian: ÃÂÃÂÃÂàÃÂøúþûðõòøàÃÂõÃÂðýøÃÂýþò; 9 July 1944 â 18 November 2006) was a Russian pianist and conductor specialized in Russian contemporary music. He premiered Sofia Gubaidulina's in 1976, and her 1981 Descensio was dedicated to him.