Book excerpt: Looking for the best classical repertoire for the Christmas season? Favorite Christmas Classics for Solo Singers spans a wide range of eras and styles. Includes historical information, suggestions for performance, pronunciation guides and translations where applicable. Titles include: "Ave Maria," "Gesu Bambino,"" In the Bleak Midwinter," "Lo, How a Rose E'er Blooming," "O Come, O Come, Emmanuel," "O Holy Night," "O Jesus So Gentle, Jesus So Sweet!," "Sheep May Safely Graze," and "The Virgin's Slumber Song."