Opera heard in his earlier operas such as "Der fliegende Holländer", "Tannhäuser" and "Lohengrin"; and he was prepared to violate accepted musical conventions, such as tonality, in his quest for greater expressivity. In his mature music dramas, "Tristan und Isolde", "Die Meistersinger von Nürnberg", "Der Ring des Nibelungen" and "Parsifal", he abolished the distinction between aria and recitative in favour of a seamless flow of "endless melody". Wagner also brought a new philosophical dimension to opera in his works, which were usually based on stories from Germanic or Arthurian legend. Finally, Wagner built his own opera house at Bayreuth with part
Mercy (GOOD Music song) "swerve" several times throughout the song. "LA Weekly" journalist Brian McManus noted that the track contains references to suicide doors, which West has previously discussed in his song "Can't Tell Me Nothing. "Mercy" received mostly positive reviews from music critics. Idolator stated that the track "falls somewhere in the middle of the pack among West's previous G.O.O.D. Friday singles – it's nowhere near as much fun as "Good Friday" or as seductive as "Devil in a New Dress". Amy Sciarretto of Popcrush stated that the track was "great", and that "even with four rappers laying down verses on the song,