Shakespeare's The Tempest on a libretto by Eugène Scribe, and even announced it as forthcoming in 1847, the year of Mendelssohn's death. The libretto was eventually set by Fromental Halévy. At his death Mendelssohn left some sketches for an opera on the story of the Lorelei. Choral works Mendelssohn's two large biblical oratorios, St Paul in 1836 and Elijah in 1846, are greatly influenced by J. S. Bach. The surviving fragments of an unfinished oratorio, Christus, consist of a recitative, a chorus "There Shall a Star Come out of Jacob", and a male voice trio. Strikingly different is the more overtly Romantic Die erste Walpurgisnacht (The First Walpurgis Night), a setting for chorus and orchestra of a ballad by Goethe describing pagan rituals of the Druids in the Harz mountains in the early days of Christianity. This score has been seen by the scholar Heinz-Klaus Metzger as a "Jewish protest against the domination of Christianity". Mendelssohn wrote five settings from "The Book of Psalms" for chorus and orchestra. Schumann opined in 1837 that his version of Psalm 42 was the "highest point that he [Mendelssohn] reached as a composer for the church. Indeed the highest point recent church music has reached at all." Mendelssohn also wrote many smaller-scale sacred works for unaccompanied choir, such as a setting of Psalm 100, Jauchzet dem Herrn, alle Welt, and for choir with organ. Most are written in or translated into English. Among the most famous is Hear My Prayer, whose second half contains "O for the Wings of a Dove", which became often performed as a separate item. The piece is written for full choir, organ, and a treble or soprano soloist. Mendelssohn's biographer Todd comments, "The very popularity of the anthem in England [...] later exposed it to charges of superficiality from those contemptuous of Victorian mores." A hymn tune Mendelssohn – an adaptation by William Hayman Cummings of a melody from Mendelssohn's cantata Festgesang (Festive Hymn), a secular 1840s composition, which Mendelssohn felt unsuited to sacred music – has become the standard tune for Charles Wesley's popular Christmas hymn "Hark! The Herald Angels Sing". Songs Mendelssohn wrote many songs, both for solo voice and for duet, with piano. It has been asserted that from 1819 (when he was 10) until his death there was "scarcely a single month in which he was not occupied with song composition". Many of these songs