[MAIN SPOILERS] A thing I noticed after Season 4 rewatch

The season started off with a scene in which Tywin was shown forging Ned Stark's Ice into two new swords Oathkeeper and Widow's Wail. The scene was just epic, starting off with an emotional Stark theme and ending with 'The Rains of Castamere' Instrumental ,signifying the win of the Lannisters in the War of Five Kings, the destruction of the Starks and also implying the strength of Tywin and his house throughout the Seven Kingdoms. . Just opposite to that scene, the very last scene of the same season(just before the scene where Arya sails off to Bravoos),the same man died in the most disgusting way possible,in the toilet by the hands of his own son, and ironically the song ' The Rains of Castamere ' instrumental version was played again , the song which previously signified the glory of the Lannister now signified the cracks on their house which would further 'weaken' it. How contrary were both the scenes isn't it? Sorry if this wasted your time but I couldn't help to share this here.