Dido and Aeneas, Z. 626, Act II Scene 1 - No. 17. Recitative, "Ruin'd E're the Set of Sun?" (Witches, Sorceress) - No. 18. Chorus, "Ho ho" - No. 19. Duet, "But E're We this Perform" (Witches) - No. 20. Chorus, "In our deep" - No. 21. Echo Dance of Furies