At Reims Cathedral _____ replaced the stone sculptures normally found in the tympanum

The catalog number that is often used to identify Haydn's compositions is known as:

A) Hoboken (Hob.) B) Köchel (K.) C) Schmieder (S.) D) Longo (L.)

The aria "La donna e mobile" is from Verdi's opera ________.

Fill in the blank(s) with the appropriate word(s).