: Rachmaninoff based this movement on a traditional Greek Chant ( Grecheskago raspeva ), though it is often mistaken for Kievan or Znamenny chant due to its deep, resonant character [ 0.5.14 , 0.5.8 ].

"" (Old Church Slavonic for " Bless the Lord, O my soul ") is a central text in the Eastern Orthodox liturgy, primarily known as the Second Movement of Sergei Rachmaninoff’s masterpiece, the All-Night Vigil (Op. 37). Musical and Liturgical Context

: Pyotr Ilyich Tchaikovsky also wrote a setting of this text in his own All-Night Vigil (Op. 52), which influenced Rachmaninoff's later work [ 0.5.26 ].