We compare Taylor Swift singing "I Knew You Were Trouble" with Rachel Potter & VoicePlay's a capella version. Their styles and emotional variations definitely showcase their unique talents.

Sources:

- Taylor Swift - I Knew You Were Trouble: https://youtu.be/vNoKguSdy4Y

- VoicePlay feat. Rachel Potter - I Knew You Were Trouble/As Long As You Love Me: https://youtu.be/spa88tPh2HE

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