ماخذ: Blessed Assurance. KNAPP-CROSBY. Phoebe P. Knapp. Hymn for 4-part. SATB. by Pamela Webb Tubbs. Choir keyboard. Violin.
ترجمه: تضمین خوبان. mixed voices Choir with Piano accompaniment and Solo Violin descant, arr. توسط پاملا وب Tubbs. قمر P. نپ. صفحه کلید کر. ویولن.