Why did WWE change the old 'Across the Nation' Raw Theme?

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hi friends. i was browsing through youtube videos when i felt nostalgic and started checking for old wwe themes and found to my surprise,the across the nation theme. when checking the comments i found that none of them found it pleasing that they changed this theme and using a lame one these days. so brings us to the question? what prompted wwe to change this theme? just trying out new ones or were there any problems with the old one? i couldn't find anything about it