basset horn (or bass clarinet or bassoon) solo.

Hummel wrote three versions of the four-minute fantasias: the original version for basset horn as well as versions for solo bass clarinet and solo bassoon. The most effective version undoubtedly is the version for basset horn with its mystically transfigured sound which even Mozart had used for the musical reference to the world to come.

Each of the three fantasias begins with a Gregorian song in praise of the Virgin Mary followed by an elaborate fantasia on this tune. Thus, Hummel bridges the period from the 17th century to the present time, from the old-fashioned religious melody to 20th-century music. 'Marianische Fantasien' are pieces of moderate difficulty, yet full of charming beauty. They will enthuse the audience both in the concert hall and in church.