I was very disappointed in my purchase. The product description given by Amazon in no way resembles what I received.What I thought I was ordering was a music edition of the Liturgy, containing music for 4-part singingThe decription states: The Liturgy of the Presanctified Gifts and other Lenten hymns as sung by the St Vladimir'sSeminary Choir, directed by David Drillock. Paperback: 264 pagesPublisher: St Vladimirs Seminary Pr (April 1991)Language: EnglishISBN-10: 0881410950ISBN-13: 978-0881410952Product Dimensions: 11.8 x 9 x 0.9 inchesShipping Weight: 2 pounds (View shipping rates and policies)What I received seems to be a personal prayer edition. It contains very little music.Paperback 62pp.,Publisher: St Vladimirs Seminary Pr (1975)Language: EnglishISBN-10: 0881410950Product Dimensions: 6 x 3.9 x 0.25 inchesWeight: 2 oz.The ISBN-10 numbers match, maybe there is confusion. but the book I got is certainly not worth $25.00!!!!!